At a height of 6.37 10⁶ meters above the Earth's surface, the astronaut's weight is 195.5 N.
How to determine weight of astronaut?The weight of the astronaut changes as they move away from the surface of Earth due to the decrease in the gravitational force acting on them.
Use the formula:
F = Gm₁m₂/r²
where F = gravitational force,
G = gravitational constant,
m₁ = mass of the Earth,
m₂ = mass of the astronaut, and
r = distance between the center of the Earth and the astronaut.
Since the mass of the astronaut remains the same, use the formula to find the weight of the astronaut at the given distance.
First, calculate the distance from the center of the Earth to the astronaut:
r = radius of the Earth + height above the surface
r = 6,371,000 m + 6,370,000 m = 12,741,000 m
Calculate the gravitational force acting on the astronaut:
F = Gm₁m₂/r²
F = (6.6743 × 10⁻¹¹ N m²/kg²) x (5.972 × 10²⁴ kg) x (80 kg) / (12,741,000 m)²
F = 195.5 N
Therefore, the weight of the astronaut at a height of 6.37 × 10⁶meters above the surface of Earth is 195.5 N.
Find out more on astronaut weight here: https://brainly.com/question/4080619
#SPJ1
-Which phase of the Moon occurs when the Earth is located directly between the Moon and the Sun?
-New moon
-First quarter
-Full moon
-Last quarter
pls help
Answer: new moon
Explanation:
As you've learned, several phrases can be used to describe wave motion. Such
phrases include how often, how much time, how fast, how high, and how long.
Which of these phrases would be the most appropriate phrase for describing the period of a wave?
Out of the various phrases used to describe wave motion, the most appropriate phrase for describing the period of a wave would be "how often."
The period of a wave refers to the time it takes for one complete cycle of the wave to occur. This means that it measures how often the wave completes its cycle.
Therefore, "how often" is the most relevant phrase to use when describing the period of a wave.
It's important to note that the other phrases mentioned - how much time, how fast, how high, and how long - are all relevant to different aspects of wave motion.
"How much time" is related to the duration of the wave, "how fast" refers to the speed at which the wave travels, "how high" refers to the amplitude of the wave, and "how long" can refer to both the duration and the length of the wave.
Understanding the various phrases used to describe wave motion is important for accurately communicating information about waves.
When discussing waves, it's essential to use the appropriate terminology to ensure that the content loaded is clear and precise.
To know more about wave motion refer here
https://brainly.com/question/12512349#
#SPJ11
A 66-kg skier speeds down a trail, as shown in (Figure 1). The surface is smooth and inclined at an angle of 22 ∘ with the horizontal.
A)Complete the free-body diagram by adding the forces that act on the skier.
Draw the vectors with their tails at the black dot.
B)Determine the normal force acting on the skier. Express your answer in newtons.
(a) The free body diagram consist of three forces, normal force, weight of skier, and force of friction.
(b) The normal force acting on the skier is approximately 600 N.
What are the forces acting on the skier?The forces that act on the skier are:
Gravitational force or weight (W) acting vertically downward with a magnitude of W = mg.Normal force (N) acting perpendicular to the surface of the slope, with a magnitude equal to the component of the gravitational force perpendicular to the slope.Frictional force (F) acting parallel to the surface of the slope, opposing the motion of the skier.B) To determine the normal force acting on the skier, we need to find the component of the gravitational force perpendicular to the slope. This can be calculated using trigonometry:
N = mg cos(θ)
where;
θ is the angle of inclination of the slope with respect to the horizontal.Substituting the given values, we get:
N = (66 kg) x (9.8 m/s^2) x cos(22°)
N ≈ 600 N
Learn more about normal force here: https://brainly.com/question/14486416
#SPJ1
An ungraduated mercury thermometer 'Q" attached to millimeter scale reads 22. 8mm in ice and 252. 4mm in steam at standard pressure. What will it read on a day when temperature is 30 F
The thermometer would read 93.9°F on a day when the temperature is 30°F. We can use the calibration points of ice and steam at standard pressure to determine the temperature indicated by an ungraduated mercury thermometer.
To determine the temperature indicated by the ungraduated mercury thermometer, we need to use the calibration points of ice and steam at standard pressure. The difference between the two calibration points is 252.4 mm - 22.8 mm = 229.6 mm.
We can calculate the temperature corresponding to 229.6 mm using the conversion formula for mercury thermometers:
[tex]t = [(L-Q)/(L-U)] \times (t_U - t_Q) + t_Q,[/tex]
where L is the length of the mercury thread in the thermometer, Q is the length of the mercury thread at the ice point, U is the length of the mercury thread at the steam point, t_U is the temperature of the steam point (100°C at standard pressure), and t_Q is the temperature of the ice point (0°C at standard pressure).
Substituting the given values, we get:
[tex]t = [(229.6 - 22.8)/(252.4 - 22.8)] \times (100^{\circ}C - 0^{\circ}C) + 0^{\circ}C = 34.4^{\circ}C.[/tex]
To convert this temperature to Fahrenheit, we can use the conversion formula:
[tex]T(^{\circ}F) = T(^{\circ}C) \times 9/5 + 32[/tex]
Substituting the calculated temperature, we get:
[tex]T(^{\circ}F) = 34.4^{\circ}C \times 9/5 + 32 = 93.9^{\circ}F[/tex]
Therefore, the thermometer would read 93.9°F on a day when the temperature is 30°F.
In summary, we can use the calibration points of ice and steam at standard pressure to determine the temperature indicated by an ungraduated mercury thermometer. By applying the conversion formulas, we can convert this temperature to Fahrenheit.
To know more about thermometers refer here:
https://brainly.com/question/29109380#
#SPJ11
A ball tied to a string of length 0.507 m makes 2.2 revolutions every second. Calculate the speed of the ball. Your answer must be within ± 2.0%
The speed of the ball can be calculated using the formula:
v = 2πr/T
where v is the speed of the ball, r is the length of the string, and T is the period of rotation (time taken for one revolution).
In this case, the length of the string is given as 0.507 m and the ball makes 2.2 revolutions every second. Therefore, the period of rotation (T) can be calculated as:
T = 1/f = 1/(2.2 rev/s) = 0.4545 s/rev
The radius of the circular path can be calculated as the length of the string. Therefore,
r = 0.507 m
Substituting these values in the formula, we get:
v = 2πr/T = 2π(0.507 m)/(0.4545 s/rev) = 7.01 m/s
To find the acceptable range of values, we can use the formula for percentage error:
% error = |(actual value - expected value) / expected value| x 100%
Substituting the actual value of v (7.01 m/s) and the expected value (which we can assume to be the nearest integer value, 7 m/s), we get:
% error = |(7.01 m/s - 7 m/s) / 7 m/s| x 100% = 0.14%
Therefore, the answer for the speed of the ball is 7.01 m/s, and it is within ±2.0% of the expected value.
a 77.7 uf capacitor, a 28.6 mh inductor, and a 630.5 ohm resistor are all connected in series. what linear frequency should be selected for the power supply for this circuit to ensure that the circuit operates at resonance?
The linear frequency that should be selected for the power supply for the circuit to operate at resonance is 2077.9 Hz.
To find the linear frequency that should be selected for the power supply for the circuit to operate at resonance, we can use the formula for resonant frequency of an RLC circuit:
f = 1 / (2π√(L*C))
where f is the resonant frequency, L is the inductance in henries, and C is the capacitance in farads.
In this case, the capacitance is given as 77.7 μF, which is equivalent to 0.0777 F, and the inductance is given as 28.6 mH, which is equivalent to 0.0286 H. The resistance is given as 630.5 Ω.
Substituting these values into the formula, we get:
f = 1 / (2π√(0.0286 H * 0.0777 F)) = 2077.9 Hz
At this frequency, the inductive reactance and the capacitive reactance cancel out, and the impedance of the circuit is purely resistive, resulting in maximum current flow and minimum power loss.
To learn more about frequency click on,
https://brainly.com/question/16991418
#SPJ4
2) A car travelling at 35. 0 km / hr speeds up to 45 km / hr in a time of
5. 00 s. The same car later speeds up from 65 km / hr to 75 km/hr in
a time of 5. 00 sec.
a. Calculate the magnitude of the constant acceleration for each of
these intervals.
b. Determine the distance traveled by the car during each of these
time intervals.
A car travelling at 35. 0 km / hr speeds up to 45 km/hr in a time of 5.00 s. The same car later speeds up from 65 km / hr to 75 km/hr in a time of 5. 00 sec.
a. To calculate the magnitude of acceleration, we can use the formula
a = (Vf - Vi) / t
Where a is the acceleration, Vf is the final velocity, Viis the initial velocity, and t is the time taken.
For the first interval, Vi = 35 km/hr = 9.72 m/s, Vf = 45 km/hr = 12.5 m/s, and t = 5.00 s.
So, a = (12.5 - 9.72) / 5.00 = 0.556 m/[tex]s^{2}[/tex]
For the second interval, Vi = 65 km/hr = 18.1 m/s, Vf = 75 km/hr = 20.8 m/s, and t = 5.00 s.
So, a = (20.8 - 18.1) / 5.00 = 0.540 m/[tex]s^{2}[/tex]
b. To calculate the distance traveled by the car during each time interval, we can use the formula
d =Vit + 1/2a[tex]t^{2}[/tex]
Where d is the distance traveled, vi is the initial velocity, a is the acceleration, and t is the time taken.
For the first interval, vi = 9.72 m/s, a = 0.556 m/[tex]s^{2}[/tex], and t = 5.00 s.
So, d = (9.72)(5.00) + [tex]1/2(0.556)(5)^{2}[/tex] = 66.8 m
For the second interval, vi = 18.1 m/s, a = 0.540 m/[tex]s^{2}[/tex], and t = 5.00 s.
So, d = (18.1)(5.00) + [tex]1/2 (0.540)(5)^{2}[/tex] = 128.3 m
Therefore, the distance traveled by the car during the first interval is 66.8 m, and during the second interval is 128.3 m.
To know more about speeds here
https://brainly.com/question/22109908
#SPJ4
1. What aspect of electricity did Ben Franklin’s experiment demonstrate?
2. What evidence exists that he actually performed this experiment?
3. Why do some scientists and historians doubt this story?
4. Do you think that Franklin actually performed this experiment? Why or why not?
5. Did anyone else try repeating this experiment? If so, identify the person and when they did so. Then, describe the experiment’s results.
6. Examine the postings of your classmates, and post any additional data/evidence that you found that might have been overlooked
1. The relationship between lightning and electricity was made clear by Franklin's experiment.2. He submitted a plan for an experiment in which a lightning rod would be used to attempt to capture an electrical charge. 3,4. Some scientists and historians doubt this story because it's highly unlikely that lightning struck a key while Franklin was flying a kite because he would have most likely perished5. . Noone else try repeating this experiment
Do you think that Franklin actually performed this experiment?
The experiment was not carried out by Franklin to demonstrate the presence of electricity. Furthermore, it's highly unlikely that lightning struck a key while Franklin was flying a kite because he would have most likely perished.
He submitted a plan for an experiment in which a lightning rod would be used to attempt to capture an electrical charge in a "leyden jar," a container for storing electrical charges, proving that lightning was a type of electricity. Noone else try repeating this experiment.
Franklin established that lighting was an electrical discharge through the kite experiment and discovered that it could be charged into the ground over a conductor, offering a secure alternate route and reducing the possibility of fatal fires.
To learn more about electricity use:
https://brainly.com/question/29789034
#SPJ4
Gravity is also affected by mass. ____, which is the amount of matter in an object. As the amount of mass increases, the forces of gravity between two objects _____
Please help
Answer:
Mass
Increases
Explanation:
Gravity is also affected by mass. Mass, which is the amount of matter in an object. As the amount of mass increases, the forces of gravity between two objects also increases.
part 2 someone help pls
ans. 32P16
When phosphorus-32 undergoes beta decay, the nuclide formed is sulfur-32. Phosphorus-32 undergoes beta minus decay, changing a neutron to a proton. This increases the atomic number by one. If it underwent beta minus decay, a proton would change to a neutron and decrease the atomic number by one.
How many waves are shown in the diagram above? If the diagram represents 2 seconds, what is the frequency of the wave shown? What is the period of the wave shown? If the total distance show above is 10 meters, what is the wavelength of a single wave? What is the speed of the diagram above?
Based on the attached diagram:
only one wave is shown in the diagramthe frequency of the wave shown is 1.5 Hzthe period of the wave shown is 0.67 secondsthe wavelength of the wave 3.33 mthe speed of the wave is 5 ms/sWhat is the frequency of the wave?The frequency of the wave is calculated s follows;
Frequency = Number of complete oscillations / time
Frequency = 3/2
Frequency = 1.5 Hz
Period = 1/f
Period = 1/1.5
Period = 0.67 seconds
wavelength = distance / Number of complete oscillations
wavelength = 10 / 3
wavelength = 3.33 m
Speed = wavelength * freqeuncy
Speed = 3.33 * 1.5
Speed = 5 m/s
Learn more about frequency and wavelength at: https://brainly.com/question/6297363
#SPJ1
A length of copper wire was measured with a tape measure to give a length of 50. 0m with an uncertainty of 1 cm. The thickness of the wire was measured to be 1. 00mm,using a micrometer screw gauge. Calculate the volume of the copper used?
A copper wire was measured to be 50.0m long with an uncertainty of 1cm and had a thickness of 1.00mm measured with a micrometer screw gauge. The volume of copper used was [tex]3.93 \times 10^{-5}\; m^3[/tex] with an uncertainty of [tex]\pm 7.85 \times 10^{-9} m^3[/tex].
The volume of copper used can be calculated by multiplying the length, cross-sectional area, and density of copper. The length is given as 50.0 m with an uncertainty of [tex]\pm 0.01[/tex]m, and the thickness of the wire is given as 1.00 mm, which is equivalent to 0.001 m.
The cross-sectional area of the wire can be calculated using the formula for the area of a circle, which is πr², where r is the radius of the wire.
The radius of the wire can be calculated by dividing its thickness by 2, giving a value of 0.0005 m. Therefore, the cross-sectional area is [tex]\pi (0.0005)^2 = 7.85 \times 10^{-7} m^2[/tex]. The density of copper is 8.96 g/cm³, which is equivalent to [tex]8.96 \times 10^3 \;kg/m^3[/tex].
Using the formula V = L x A, where V is the volume of copper, L is the length of the wire, and A is the cross-sectional area, we get:
[tex]V = (50.0 \pm 0.01 m) \times (7.85 \times 10^{-7} m^2)[/tex]
[tex]V = 3.93 \times 10^{-5} m^3 \pm 7.85 \times 10^{-9} m^3[/tex]
To account for the uncertainties in the measurements, we used significant figures and error propagation rules. The uncertainty in the volume was calculated using the formula for the multiplication of quantities with uncertainties.
In summary, the volume of copper used was found to be [tex]3.93 \times 10^{-5}\; m^3[/tex] with an uncertainty of [tex]\pm 7.85 \times 10^{-9} m^3[/tex].
To know more about volume refer here:
https://brainly.com/question/30347304#
#SPJ11
according to the laws of thermal radiation, hotter objects emit photons with group of answer choices a lower average energy. a lower average frequency. a shorter average wavelength. a higher average speed.
This phenomenon, often referred to as blackbody radiation, is crucial to many disciplines, including astronomy, where it is used to investigate the temperature and make-up of stars.
According to the laws of thermal radiation, hotter objects emit photons with a shorter average wavelength. This is because the energy of a photon is directly proportional to its frequency, and inversely proportional to its wavelength. As the temperature of an object increases, the average energy of its emitted photons also increases.
This means that the average frequency of emitted photons is higher, which corresponds to a shorter average wavelength. This effect can be observed in everyday life, such as when a hot piece of metal glows red or even white-hot.
At these high temperatures, the emitted photons have very short wavelengths in the visible range, which gives the object its characteristic color. This phenomenon is known as blackbody radiation, and it plays an important role in many fields, including astronomy, where it is used to study the temperature and composition of stars.
This phenomenon, often referred to as blackbody radiation, is crucial to many disciplines, including astronomy, where it is used to investigate the temperature and make-up of stars.
To learn more about : phenomenon
https://brainly.com/question/24431608
#SPJ11
Electron and positron each with kinetic energy 220kev are generated by photon, what is the energy and wavelength
The energy of the photon is 440 keV (or 7.048 x 10^-14 J), and the wavelength is approximately 2.82 x 10^-12 meters.
When an electron and positron are generated by a photon, the energy of the photon is converted into the mass and kinetic energy of the two particles.
The energy of the photon can be calculated by adding the kinetic energies of the electron and positron, which is 220 keV + 220 keV = 440 keV. To convert this to Joules, multiply by 1.602 x 10^-16 J/keV, which gives you an energy of 7.048 x 10^-14 J.
To calculate the wavelength of the photon, we can use the Planck's equation: E = h*c/λ, where E is the energy, h is Planck's constant (6.626 x 10^-34 J·s), and c is the speed of light (3 x 10^8 m/s). Solving for the wavelength λ:
λ = h*c/E = (6.626 x 10^-34 J·s)*(3 x 10^8 m/s)/(7.048 x 10^-14 J) ≈ 2.82 x 10^-12 m
So, the energy of the photon is 440 keV (or 7.048 x 10^-14 J), and the wavelength is approximately 2.82 x 10^-12 meters.
To learn more about photon, refer below:
https://brainly.com/question/20912241
#SPJ11
Mr. B catches the sports on 610 AM, which broadcasts at 610 kHz. Determine the wavelength of these radio waves.
These radio waves have a wavelength of roughly 492.62 metres.
What is the FM broadcasting frequency?In the USA, the FM transmission runs from 88.0 MHz to 108.0 MHz. 100 channels, each 200 kHz (0.2 MHz) wide, make up the band. The centre frequency is situated 100 kHz (0.1 MHz) up from the channel's lower end, or at half the FM channel's bandwidth. As frequency rises as energy falls, frequency and energy are related directly in the energy equation.
wavelength Equals light's speed (c) divided by frequency (f)
Where the speed of light (c) is approximately 3.00 x 10⁸ m/s.
Converting the given frequency of 610 kHz to Hz:
610 kHz = 610 x 10³ Hz
Substituting the values in the formula:
λ = (3.00 x 10⁸ m/s) / (610 x 10³ Hz)
λ = 492.62 meters (approx.)
To know more about wavelength visit:-
https://brainly.com/question/13533093
#SPJ1
Every time the world gathers for the Olympic games, new records in track and field events are recorded. In 2021, Sydney McLaughlin established a new Olympic record when she ran the 400.-meter hurdles in 51.46 seconds.
What was her average speed (in m/s) for the race? Remember to include your data, equation, and work when solving this problem.
Essay Submission · Turnitin Score: 36 %
Sydney McLaughlin's average speed during the 400-meter hurdles race was 7.77 m/s.
What was her average speed for the race?The average speed of Sydney McLaughlin during the 400-meter hurdles race is calculated as follows;
Average speed = distance / time
The distance is 400 meters, and the time is 51.46 seconds.
The average speed of Sydney McLaughlin during the 400-meter hurdles race is calculated as;
Average speed = 400 / 51.46
Average speed = 7.77 m/s
Learn more about average speed here: https://brainly.com/question/4931057
#SPJ1
when traveling at 55mph, how many feet do you need to stop?approximately 302 feetapproximately 303 feetapproximately 304 feetapproximately 305 feet
When calculating the stopping distance, various factors come into play, including reaction time, road conditions, vehicle weight, and braking efficiency. However, a commonly used estimate for the stopping distance at 55 mph (miles per hour) is approximately 4 to 5 times the thinking distance, which is the distance traveled during the driver's reaction time.
Assuming an average reaction time of 1.5 seconds, the thinking distance can be estimated by considering the speed:
Thinking Distance = Speed × Reaction Time
Converting 55 mph to feet per second (fps):
55 mph = 55 × 1.46667 fps (1 mph ≈ 1.46667 fps)
Now, calculating the thinking distance:
Thinking Distance = 55 × 1.46667 × 1.5 = 120.9335 feet (approximately)
Adding this thinking distance to the braking distance, we can estimate the overall stopping distance.
Therefore, the approximate stopping distance at 55 mph would be:
Stopping Distance ≈ Thinking Distance + Braking Distance
Stopping Distance ≈ 120.9335 feet + Braking Distance
Based on the options provided, none of them align with this approximate estimation. However, the closest option is:
Approximately 305 feet.
To know more about stopping distance refer here
https://brainly.com/question/28542251#
#SPJ11
A conical tank has height 3 m and radius 2 m at the top. water flows in at a rate of 1.1m3/min. how fast is the water level rising when it is 1.7 m
The water level is rising at a rate of approximately 0.27 m/min when it is 1.7 m.
To solve this problem, we need to use the formula for the volume of a cone:
V = (1/3)πr^2h
where V is the volume, r is the radius, and h is the height of the cone.
We can differentiate this formula with respect to time to find the rate of change of the volume:
dV/dt = (1/3)π(2r)(dr/dt)h + (1/3)πr^2(dh/dt)
where dr/dt is the rate of change of the radius and dh/dt is the rate of change of the height.
We are given that water flows in at a rate of 1.1m3/min, which means that dV/dt = 1.1. We are also given the height of the water level, h = 1.7 m.
To find the rate of change of the height, dh/dt, we need to solve for dr/dt using the given values of r and h:
r/h = 2/3
r = (2/3)h
Substituting this into the formula for the volume of a cone, we get:
V = (1/3)π(4/9)h^3
Differentiating this formula with respect to time, we get:
dV/dt = (4/9)πh^2(dh/dt)
Substituting the given values of dV/dt and h, we get:
1.1 = (4/9)π(1.7)^2(dh/dt)
Solving for dh/dt, we get:
dh/dt = 1.1/((4/9)π(1.7)^2) ≈ 0.27 m/min
To know more about the water level, click here;
https://brainly.com/question/17750427
#SPJ11
A plane monochromatic electromagnetic wave with wavelength λ=2. 0cm, propagates through a vacuum. Its magnetic field is described by >B⃗ =(Bxi^+Byj^)cos(kz+ωt), where Bx=1. 9×10−6T,By=4. 7×10−6T, and i^ and j^ are the unit vectors in the +x and +y directions, respectively. What is Sz, the z-component of the Poynting vector at (x=0,y=0,z=0) at t=0?
The z-component of the Poynting vector of plane monochromatic electromagnetic wave with wavelength λ=2. 0cm at (x=0,y=0,z=0) at t=0 is -2.44×10⁻¹¹W/m².
Poynting vector describes the flow of energy in an monochromatic electromagnetic wave and is given by:
>S⃗=1/μ0(E⃗ ×B⃗ )
where μ0 is the permeability of free space, E⃗ is the electric field vector, and B⃗ is the magnetic field vector. In this case, we are given the magnetic field vector as:
>B⃗ =(Bxi^+Byj^)cos(kz+ωt)
To find the z-component of the Poynting vector at (x=0,y=0,z=0) at t=0, we first need to determine the electric field vector. We know that the wave is monochromatic, meaning it has a single frequency, and we are given the wavelength λ=2.0cm. We can use the relationship between wavelength and frequency:
>c=λf
where c is the speed of light, to find the frequency:
>f=c/λ
>f=(3.00×10⁸ m/s)/(0.02 m)
>f=1.50×10¹⁰ Hz
Now we can use the relationship between the electric and magnetic fields in an electromagnetic wave:
>E=cB
to find the electric field vector:
>E=c(Bxi^+Byj^)
>E=(3.00×10⁸ m/s)(1.9×10⁻⁶ xi^+4.7×10⁻⁶ yj^)
>E=(5.70×10² V/m)xi^+(1.41×10³ V/m)yj^
We can now substitute the magnetic and electric field vectors into the expression for the Poynting vector:
>S⃗=1/μ0(E⃗ ×B⃗ )
>S⃗=1/μ0[(5.70×10²2 xi^+1.41×10³ yj^)×(1.9×10−6 xi^+4.7×10⁻⁶ yj^)]cos(kz+ωt)
>S⃗=1/μ0(−8.91×10⁻¹⁶z^)cos(kz+ωt)
where z^ is the unit vector in the +z direction. Plugging in the values for μ0, k, and ω, we get:
>S⃗=−2.44×10−11z^W/m²
where W/m² represents the units of power per unit area. Finally, we need to find the z-component of the Poynting vector at (x=0,y=0,z=0) at t=0, so we plug in those values:
>Sz=−2.44×10−11(1) W/m²
>Sz=−2.44×10−11 W/m²
Therefore, the z-component of the Poynting vector at (x=0,y=0,z=0) at t=0 is -2.44×10^-11 W/m².
Learn more about monochromatic electromagnetic wave at: https://brainly.com/question/14477656
#SPJ11
The maximum allowable resistance for an underwater cable is one hundredth of an ohm per
meter and the resistivity of copper is 1. 54 x 10-80m.
a) Calculate the smallest cross sectional area of copper cable that could be used.
The smallest cross-sectional area of the copper cable that could be used is approximately 1.54 x 10^-6 square meters.
To calculate the smallest cross-sectional area of the copper cable that could be used, we need to apply Ohm's law and the formula for resistivity.
Ohm's law states that resistance (R) equals resistivity (ρ) multiplied by the length (L) of the conductor, divided by the cross-sectional area (A). In this case, we have:
R = ρ * L / A
We are given the maximum allowable resistance (R) per meter, which is 0.01 ohms/meter, and the resistivity of copper (ρ) as 1.54 x 10^-8 ohm-meter. Since we're considering resistance per meter, the length (L) is 1 meter. We need to find the smallest cross-sectional area (A) that satisfies these conditions.
0.01 ohm = (1.54 x 10^-8 ohm-meter) * 1 meter / A
To find A, we can rearrange the formula:
A = (1.54 x 10^-8 ohm-meter) * 1 meter / 0.01 ohm
A ≈ 1.54 x 10^-6 square meters
So, the smallest cross-sectional area of the copper cable that could be used is approximately 1.54 x 10^-6 square meters.
To learn more about copper, refer below:
https://brainly.com/question/13677872
#SPJ11
You are participating in a fresh water fishing tournament with the goal of catching the heaviest fish. You are in the middle of the river when you finally get your catch; unfortunately, you realize that you left the spring scales in your car. All you have in the boat are the paddles, your 16 Oz coffee mug, some rope, measuring tape, and a plastic bag.
Required:
Estimate the mass of the fish (in kilograms) using these items
To estimate the mass of the fish using the available items, follow these steps:
1. Fill your 16 oz coffee mug with river water.
2. Tie the rope around the fish securely, ensuring it doesn't escape.
3. Place the fish inside the plastic bag and seal it. Make sure there's no air inside the bag.
4. Use the paddles to create a makeshift balance scale. Balance the paddle on a stable surface in the boat, with the center acting as a fulcrum.
5. Place the bag with the fish on one end of the paddle and the coffee mug filled with water on the other end.
6. Gradually add or remove water from the coffee mug until the paddle balances evenly.
7. Measure the volume of water left in the coffee mug. This is approximately equal to the volume of the fish.
8. Assume the fish has a density similar to water (1 kg/L). Convert the remaining water volume in the coffee mug from ounces to liters (16 oz = 0.473 L).
9. Multiply the fish's volume in liters by its density (1 kg/L) to find the fish's mass in kilograms.
Keep in mind that this method is an estimation and may not be extremely accurate, but it should give you a rough idea of the fish's mass in the absence of proper scales.
To learn more about density, refer below:
https://brainly.com/question/29775886
#SPJ11
HELP PLEASE! DUE TONIGHT!
What is the magnitude of the electric field strength at a point 2.2cm to the left of the middle charge? (let kc=8.987755e9 N*m^2/C^2
The magnitude of electric field strength at a point 2.2cm to the left is 2.694 x 10⁶ N/C.
The magnitude of the force on a -2.7 μC charge is 7.2898 N.
How to calculate magnitude?Calculate the electric field at the given point due to the two positive charges using the formula:
E = k × Q / r²
where k = Coulomb's constant,
Q = charge, and
r = distance from the charge to the point of interest.
For the first positive charge,
Q = 6.5 μC and
r = 4.3 cm + 2.2 cm = 6.5 cm = 0.065 m.
Plugging these values into the formula gives:
E1 = (8.98755 x 10⁹ N. m²/C²) × (6.5 x 10⁻⁶ C) / (0.065 m)² = 2.054 x 10⁵ N/C
For the second positive charge,
Q = 1.4 μC and
r = 4.6 cm - 2.2 cm = 2.4 cm = 0.024 m.
Plugging these values into the formula gives:
E2 = (8.98755 x 10⁹ N. m²/C²) × (1.4 x 10⁻⁶ C) / (0.024 m)² = 4.249 x 10⁶ N/C
Subtract its contribution from the total electric field.
For the negative charge,
Q = -2.7 μC and
r = 2.2 cm = 0.022 m.
Plugging these values into the formula gives:
E3 = (8.98755 x 10⁹ N. m²/C²) × (-2.7 x 10⁻⁶ C) / (0.022 m)² = -1.609 x 10⁶ N/C
The total electric field at the point of interest is then:
Etotal = E1 + E2 + E3 = 2.054 x 10⁵ N/C + 4.249 x 10⁶ N/C - 1.609 x 10⁶ N/C = 2.694 x 10⁶ N/C
Now, to calculate the force on a -2.7 μC charge placed at this point:
F = q × E
where q = charge and E = electric field.
Plugging in the values gives:
F = (-2.7 x 10⁻⁶ C) * (2.694 x 10⁶N/C) = -7.2898 N
The negative sign indicates that the force is directed in the opposite direction to the electric field, which makes sense since the charge is negative.
Therefore, the magnitude of the force is:
|F| = 7.2898 N
Answer for part 1: 2.694 x 10⁶ N/C
Answer for part 2: 7.2898 N
Find out more on magnitude here: https://brainly.com/question/30337362
#SPJ1
What voltage is required to give the plates of a 270-pF capacitor a charge of 7. 3×10−9C?
Express your answer to two significant figures and include the appropriate units.
NEED HELP
27 V voltage is required to give the plates of a 270-pF capacitor a charge of 7. 3× [tex]10^{-9}[/tex] C.
The voltage (V) required to give the plates of a capacitor a charge (Q) can be calculated using the formula
V = Q/C
Where C is the capacitance of the capacitor.
In this case, the charge Q is given as 7.3 × [tex]10^{-9}[/tex] C and the capacitance C is given as 270 pF (pico-farads).
However, it is best to convert the capacitance to farads to ensure that the units are consistent
270 pF = 270 × [tex]10^{-12}[/tex] F
Now, substituting the values into the formula, we get
V = Q/C = (7. 3× [tex]10^{-9}[/tex] C) / (270 × [tex]10^{-12}[/tex] F) = 27 V
Therefore, the voltage required to give the plates of the 270-pF capacitor a charge of 7.3 × [tex]10^{-9}[/tex] C is 27 V (volts).
To know more about voltage here
https://brainly.com/question/31526382
#SPJ4
What’s the correct punctuation and capitalization for the sentence the copier as well as a printers are going to be repaired by a technician
The correct punctuation and capitalization for the sentence is: "The copier, as well as the printers, is going to be repaired by a technician."
-The first letter of a sentence is always capital "The".
-When more than one items are present, they are separated by a comma.
To know more about punctuation, visit https://brainly.com/question/30789620
#SPJ11
Please help Anatomy and phys
1. Compare and contrast positive and negative feedback loops of the endocrine system. Provide a specific example of each, including which gland is responsible for the hormone related to that loop.
2. What is the difference between endocrine and exocrine glands in terms of both form and function? Why is one type not considered part of the endocrine system?
3. Describe the cascade of events that occurs when blood glucose levels decline, including which organ and cells respond, which hormones are released, and how the process helps maintain homeostasis. Your answer should cover all three ways glucose is re-introduced to the body. What is the ultimate use of the glucose created in this process?
4. Why can both type I and type II diabetes, untreated, result in impaired vision or blindness as someone ages? How does type II diabetes turn into type I diabetes as someone ages?
5. Imagine you have a patient who has come to you and is exhibiting symptoms such as fatigue and increased thirst and urination. What would you check for to determine whether the patient has Cushing’s, type I diabetes, or type II diabetes?
When blood glucose levels decline, several organs and cells in the body respond to restore glucose levels and maintain homeostasis. The first response comes from the pancreas, which releases glucagon into the bloodstream. Glucagon stimulates the liver to break down stored glycogen into glucose, which is then released into the bloodstream. This process is called glycogenolysis and is one of the three ways glucose is reintroduced to the body.
The second response comes from the adrenal glands, which release epinephrine and norepinephrine into the bloodstream. These hormones stimulate the liver to break down glycogen into glucose, and they also stimulate the breakdown of fat cells into glucose, a process called lipolysis. This is the second way glucose is reintroduced to the body.
Finally, the third response comes from the kidneys, which can produce glucose through a process called gluconeogenesis. This is the third way glucose is reintroduced to the body.
The ultimate use of the glucose created in this process is to provide energy to the body's cells. Glucose is the primary source of energy for the brain and is also used by muscles and other organs.
If a patient exhibits symptoms such as fatigue and increased thirst and urination, several tests can be conducted to determine if they have Cushing's syndrome, type I diabetes, or type II diabetes. For Cushing's syndrome, tests may include blood and urine tests to measure cortisol levels, as well as imaging tests to check for tumors in the adrenal or pituitary glands.
For type I diabetes, blood tests may be conducted to measure blood glucose and ketone levels, as well as tests to measure levels of antibodies that attack insulin-producing cells. For type II diabetes, blood tests may be conducted to measure blood glucose levels, as well as tests to measure insulin resistance and other metabolic factors.
Additionally, a physical exam may reveal signs such as high blood pressure or excess weight, which can be associated with type II diabetes. Overall, a thorough medical evaluation can help determine the underlying cause of a patient's symptoms and guide appropriate treatment.
To know more about homeostasis refer here
https://brainly.com/question/3888340#
#SPJ11
which of the following choices gives the amount of power used by a capacitor in an ac circuit? group of answer choices the power used by the capacitor is equal to zero watts. vrmsirms2 irmsxc irmsxc2 vrmsxc
The power used by a capacitor in an AC circuit is equal to zero watts. Option 3 is correct.
This is because the power used by a capacitor is reactive power, which means that it is not dissipated as heat but is rather stored and released in the circuit. In an AC circuit, the capacitor alternately charges and discharges as the voltage and current change direction, respectively, but the net power used over a complete cycle is zero.
The other choices refer to different formulas for calculating other aspects of an AC circuit, such as the impedance of a capacitor (IrmsXC), the product of the voltage and the impedance (VrmsXC), or the total power in the circuit (VrmsIrms^2). However, none of these formulas give the amount of power used by a capacitor in an AC circuit. Option 3 is correct.
The complete question is
Which of the following choices gives the amount of power used by a capacitor in an ac circuit?
1. IrmsXC^2
2. IrmsXC
3. The power used by the capacitor is equal to zero watts.
4. VrmsXC
5. VrmsIrms^2
To know more about the Capacitor, here
https://brainly.com/question/15088605
#SPJ4
A small plate has moved away from a large plate. It has moved150,000 meters in 30 million years. It is moving eastward.
1. What is the rate of motion of the small plate? Express your answer in mm/year.
2. Where would the plate be after 1. 5 million years? Express your answer in m
The small plate is moving eastward at a rate of 5 millimeters per year. After 1.5 million years, the small plate would be 7,500 meters farther away from the large plate.
To find the rate of motion of the small plate, we can divide the distance it moved by the time it took to move that distance:
Rate of motion = distance/time
In this case, the distance is 150,000 meters and the time is 30 million years, which is equivalent to 30,000,000 years. Converting both values to millimeters and years, respectively, we get:
Rate of motion = (150,000 meters) / (30,000,000 years) * (1000 mm/meter) / (1 year/1)
Simplifying this expression, we get:
Rate of motion = 5 mm/year
To find where the small plate would be after 1.5 million years, we can use the formula:
distance = rate of motion * time
Using the rate of motion we calculated in part 1 (5 mm/year) and the given time of 1.5 million years, we get:
distance = (5 mm/year) * (1.5 million years)
Converting the result back to meters, we get:
distance = 7,500 meters
To know more about plate, here
brainly.com/question/16941906
#SPJ4
Estimate the lowest possible kinetic energy of a neutron contained in a typical nucleus of radius 1. 2×10−15m. Use the radius as the uncertainty in position for the neutron. [Hint: Assume a particle can have a kinetic energy as large as its uncertainty. ]
The uncertainty principle can be used to estimate the minimum kinetic energy of a neutron in a nucleus of a certain size. The resulting minimum energy is around [tex]10^{-24}[/tex] joules.
The uncertainty principle states that the product of the uncertainty in the position and momentum of a particle must be greater than or equal to Planck's constant divided by 4π.
Therefore, using the given radius of the nucleus as the uncertainty in position, we can calculate the minimum kinetic energy of a neutron in the nucleus by assuming it has an uncertainty in momentum equal to its uncertainty in position.
Using this approach, we have:
[tex]\Delta x = 1.2 \times 10 - 15 m[/tex] (uncertainty in position)
[tex]\Delta p = \Delta mv = \Delta m(\Delta x/\Delta t) = \Delta m(2\pi \Delta f \Delta x)[/tex] (uncertainty in momentum)
where Δm is the uncertainty in mass, Δf is the frequency of the neutron, and Δt is the time interval over which the position is measured.
Assuming a typical frequency of [tex]10^{21} Hz[/tex] and a mass uncertainty of 1 atomic mass unit [tex](1.67 \times 10^{-27} kg)[/tex], we obtain a minimum kinetic energy of approximately [tex]10^{-24} \;joules[/tex].
In summary, the minimum kinetic energy of a neutron contained in a typical nucleus of radius [tex]1.2 \times 10^{-15} m[/tex] can be estimated using the uncertainty principle.
This approach involves assuming an uncertainty in momentum equal to the uncertainty in position and using typical values for the frequency and mass uncertainty of the neutron. The resulting minimum kinetic energy is on the order of [tex]10^{-24} \;joules[/tex].
To know more about kinetic energy refer here:
https://brainly.com/question/7674744#
#SPJ11
A vessel is filled with a gas at a temperature 30c and a pressure of 760mmhg calculate the final pressure if the volume of the gas is double while it's heated at 80c
To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:
(P1 x V1) / T1 = (P2 x V2) / T2
where P1, V1, and T1 are the initial pressure, volume, and temperature, and P2, V2, and T2 are the final pressure, volume, and temperature, respectively.
First, let's convert the initial temperature of 30°C to Kelvin:
T1 = 30°C + 273.15 = 303.15 K
We can now set up the equation with the initial conditions:
(760 mmHg x V1) / 303.15 K = (P2 x 2V1) / 353.15 K
where V1 is the initial volume of the gas.
Simplifying this equation by multiplying both sides by 303.15 K and dividing by 2V1, we get:
P2 = (760 mmHg x 303.15 K) / (353.15 K) = 653.75 mmHg
Therefore, the final pressure of the gas is 653.75 mmHg when the volume is doubled and the temperature is increased to 80°C.
a thin wire lies along the curve given by r(t) = cos(t), 0, sin(t) , 0 ≤ t ≤ , and has mass density (x, y, z) = 4 − z kg/m3. find the total mass and the center of mass of the wire. m _____ kg
To find the total mass of the wire, we need to integrate the mass density over the length of the wire. The length of the wire is given by:
L = ∫₀^π ∥r'(t)∥ dt
where r(t) = (cos(t), 0, sin(t)) is the position vector of the wire at time t, and ∥r'(t)∥ is the magnitude of the velocity vector.
r'(t) = (-sin(t), 0, cos(t)) so ∥r'(t)∥ = sqrt(sin²(t) + cos²(t)) = 1
Therefore, L = ∫₀^π 1 dt = π.
What is the total mass and the center of mass of the wire?Now, to find the mass, we need to integrate the mass density over the length of the wire:
m = ∫₀^π (4 - z) ∥r'(t)∥ dt
Since z = sin(t), we have:
m = ∫₀^π (4 - sin(t)) dt
Using the substitution u = cos(t), du = -sin(t) dt, we can write:
m = ∫₁^-1 (4 - √(1 - u²)) du
This integral can be evaluated using standard techniques, or with the help of a computer algebra system, to get:
m = 8.
To find the center of mass, we need to compute the weighted average of the position vector r(t), using the mass density as the weight function:
CM = (1/m) ∫₀^π r(t) (4 - sin(t)) ∥r'(t)∥ dt
= (1/8) ∫₀^π (cos(t), 0, sin(t)) (4 - sin(t)) (1) dt
= (1/8) ∫₀^π (4 cos(t) - sin(t) cos(t), 0, 4 sin(t)) dt
= (1/8) (8, 0, 0)
= (1, 0, 0)
Therefore, the total mass of the wire is 8 kg, and its center of mass is located at (1, 0, 0).
Learn more about mass of the wire from
https://brainly.com/question/28496633
#SPJ1