Answer:
Newtons law of conservation energy says that energy cannot be created or destroyed because energy is always made into something else. It is always reused.
Explanation:
everything that you can touch is
Answer:
real
Explanation:
Cells are of various shapes and sizes.The biggest single cell known is the
A. Amoeba
B. Bacteria
C. Egg of an ostrich
D. Human Ovum
Answer:
Explanation:
egg of an ostrich is the biggest
the postive part of atoms
Answer:
The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged)
Explanation:
An electronic device has a resistance of 20 ohms and a current of 15 A. What is the voltage across the device ?
Question :-
An Electronic Device has a Resistance of 20 Ohm's and a Current of 15 Ampere . What is the Voltage across the Device ?Answer :-
Voltage of the Device is 300 Volt's .[tex] \rule {180pt}{2pt} [/tex]
Given :-
Resistance = 20 Ohm'sCurrent = 15 AmpereTo Find :-
Voltage = ?Solution :-
As per the provided information in the given question, we have been given that the Resistance of the Device is 20 Ohm's. It's Current is given as 15 Ampere . And, we have been asked to calculate the Voltage .
For calculating the Voltage , we will use the Formula :-
[tex] \bigstar \: \: \: \boxed {\sf { \: Voltage \: = \: Current \: \times \: Resistance \: }} [/tex]
Therefore , by Substituting the given values in the above Formula :-
[tex] \Longrightarrow \: \: \: \sf { Voltage \: = \: Current \: \times \: Resistance } [/tex]
[tex] \Longrightarrow \: \: \: \sf { Voltage \: = \: 15 \: \times \: 20 } [/tex]
[tex] \Longrightarrow \: \: \: \bf { Voltage \: = \: 300 } [/tex]
Hence :-
Voltage of Device = 300 Volt's .[tex] \underline {\rule {180pt}{4pt}} [/tex]
Additional Information :-
[tex] \Longrightarrow \: \: \: \sf {Voltage \: = \: Current \: \times \: Resistance} [/tex]
[tex] \Longrightarrow \: \: \: \sf {Current \: = \: \dfrac {Voltage}{Resistance}} [/tex]
[tex] \Longrightarrow \: \: \: \sf {Resistance \: = \: \dfrac {Voltage}{Current} } [/tex]
Answer:
300 volts
Explanation:
now in this question we have been given our resistance which is 20 ohms and our current which is 15A
using ohm's law
V=IR
where v is voltage, I is current and r is resistance
now substitute,
V=15 x 20
V=300
I hope I helped
______is the change from a liquid to a gas at a temperature below boiling point
which of the following is an example of wernickes aphasia?
An example of wernickes aphasia is someone making a speech which does not make sense.
It majorly caused by loss of flow of blood to the brain. Other causes include
Head injuryBrain inflammationBrain infectionStroke. e.t.cWhat is wernickes aphasia?Wernickes aphasia can simply be defined as a language disorder that makes it very difficult for an individual to understand words and communicate with other people.
So therefore; an exam of wernickes aphasia is someone making a speech which does not make sense.
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Which of the following describes the best strategy for increasing a specific joint's range of motion? a. developing a rigorous whole-body exercise program b. avoiding stretching before vigorous exercise c. applying the principles of overload and progression to exercise the joint d. spending two hours swimming daily please select the best answer from the choices provided. a b c d
Answer:
C
Explanation:
I got it right on edge 2022
Answer:
c
Explanation:
because im hot
A force of 36N acts at an angle of 55 degrees to the vertical. The force moves its point of application by 64 cm in the direction of the force calculate work done by:
(A)the horizontal component of force
(B)the vertical component of the force
The work done by the horizontal component of force is 18.89 Joules while the vertical component of the force is 13.22 Joules.
WORKThe work done on an object, is the product of the force F and the distance S in the direction of the force. That is,
W = F x S
The S.I unit of work is Joule
Given that a force of 36N acts at an angle of 55 degrees to the vertical. The force moves its point of application by 64 cm in the direction of the force
To calculate work done by:
(A) the horizontal component of force;
Force F = 36Sin55 = 29.489N
W = 29.489 x 64/100
W = 18.87 J
(B) the vertical component of the force;
Force F = 36Cos55 = 20.649
W = 20.649 x 64/100
W = 20.649 x 0.64
W = 13.22 J
Therefore, the work done by the horizontal component of force is 18.89 Joules while the vertical component of the force is 13.22 Joules.
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please help me I’ll make u brainliest please
A 1 liter jar contains 0.5 moles of gas at a pressure of 2 atm. What is the temperature of the gas?
What is the volume of a
container of 4 moles of gas at 200 K with a pressure of 3 atm?
Your scientist friend is trying to figure out how many molecules of gas are in a container. They know that the container has a volume of 5 liters, and they measured the pressure and temperature to be 3.5 atm and 275 K. From this information, what do you tell them the mole measurement should be?
Answer:
See below ( Ideal gas law)
Explanation:
A) PV = n RT P = 2 * 760 = 1520 mm
1520 ( 1) = .5 (8.314)(T) T is in Kelvin
T = 365.64 K
B) PV = nRT
3 ( 760) V = 4 ( 8.314)(200)
V = 2.92 Liters
C) PV = nRT
3.5 (760) (5) = n (8.314)(275) n = 5.8 moles
Suppose the wavelength in the formula developed by balmer was 410 nm. What is the value of n?.
Answer:
The Balmer series is given by
1 / λ = R (1 / 2^2 - 1 / n^2)
where R is the Rydberg constant of 1.0968E-3 / Angstroms
(1 Angstrom = 1.0E-1 nm = 10E-10m)
Let x = (1 / 4 - 1 / n^2)
x = 1 / (R λ)
Note 410 nm = 4100 A
x = 1 / (1.0968E-3 * 4.1E3) = 1 / (1.0968 * 4.1) = .222
If we write
x = 1/4 - 1/n^2 = .222
1/n^2 = 1/4 - .222 = .0276
n^2 = 36.2
So n = 6
(Since modern terminology gives wavelengths in nanometers - it might be helpful to write R = 1.0968E7 m-1)
what is the speed of light faster than the speed of sound in air?
Explanation:
The speed of light in air is approximately 300,000,000 meters per second. The speed of sound in air is approximately 343 meters per second. Light is the propagation of electromagnetic waves, while sound is the physical vibration of the medium
Pls help with this ques..
(i) See the attachment.
(ii) (a) 2.4 Ω, (b) 2.5 A, (c) 1.0 A
Explanation:
(ii) (a) If the resistance of the parallel combination is Rρ, then
[tex] \frac{1}{Rρ} = \frac{1}{4} + \frac{1}{6 } \\ = > \frac{3 + 2}{12} = \frac{5}{12 } \\ or \\ Rρ = \frac{12}{5} Ω = 2.4Ω[/tex]
(b) Let the current through the battery be I, then,
[tex]I = \frac{V}{Rρ} = \frac{6}{2.4} \\ I = 2.5 \: Α[/tex]
(c) The potential difference across each resister is V = 6 volt (same as of the battery) since they are in parallel.
Current through 4 Ω resister :-
[tex]I₁ = \frac{V}{R₁} = \frac{6}{4} \\ I₁ = 1.5 \: Α[/tex]
Current through 6 Ω resistor :-
[tex]I₂ = \frac{V}{R₂} = \frac{6}{6} \\ I₂ = 1.0 \: Α \\ \\ Note \: that \: I \: = I₁ \: + I₂.[/tex]
Hope it helps you!!When isaac newton theorized that gravity caused objects to fall to the ground, he had also discovered the force that causes:.
Answer:
He did not find out any other force
Explanation:
Maybe the answer is that newton found out that the same force causes the earth rotating around the sun.
Particle A and particle B, each of mass M, move along the x-axis exerting a force on each other. The potential energy of the system of two particles assosicated with the force is given by the equation U=G/r 2, where r is the distance between the two particles and G is a positive constant
Speed of particle B is 2v₀/3 m/s to the left. Particle A and particle B will always have equal speed since they experience equal forces.
Conservation of energyThe speed and direction of the particle B is determined by applying the principle of conservation of energy as follows;
K.E₁ + P.E₁ = K.E₂ + P.E₂
[tex]\frac{1}{2} Mv^2_A + \frac{G}{r^2} = \frac{1}{2} Mv^2_B + \frac{G}{r^2} \\\\ \frac{1}{2} Mv^2_A = \frac{1}{2} Mv^2_B\\\\v^2_A = v^2_B\\\\v_A = v_B[/tex]
[tex]v_B = \frac{2v_0}{3} \ m/s \ to \ the \ left[/tex]
At any given position, the speed of particle A and particle B will be equal, since they experience equal force and they have equal masses.
The complete question is below:
Particle A and particle B, each of mass M, move along the x-axis exerting a force on each other. The potential energy of the system of two particles assosicated with the force is given by the equation U=G/r 2, where r is the distance between the two particles and G is a positive constant. At time t=T1 particle A is observed to be traveling with speed 2vo/3 to the left. The speed and direction of motion of particle B is ?
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Answer:
Explanation:
the linear momentum is conserved MiVi=MaVa+MbVb
MV0=2V0M/3+MVb
Vb=V0/3
The wavelength of a sound wave in this room is 4. 13 m and the frequency is 75 Hz. What is the speed of the wave in the room?
if you double the frequency of the sound wave but keep the wavelength the same, determine the new speed of the wave.
Let's see
#1
[tex]\\ \rm\Rrightarrow v=f\lambda[/tex]
f is frequencylambda is wavelength[tex]\\ \rm\Rrightarrow v=75(4.13)[/tex]
[tex]\\ \rm\Rrightarrow v=309.75ms^{-1}[/tex]
#2
New frequency:-
2(75)=150[tex]\\ \rm\Rrightarrow v=150(4.13)[/tex]
[tex]\\ \rm\Rrightarrow v=619.5ms^{-1}[/tex]
A force of 4,500 N acts on a car. The
acceleration of the car is 3 m/s/s. What
is the mass of the car? Show your work
below.
Answer:
1500 kg is mass of car
Explanation:
F = ma
F/a = m
4500n / 3 m/s^2 = 1500 kg
What is the speed of light in quartz (n=1.54)? Will light travel faster or slower through ruby (n = 1.76) than quartz?
Explanation:
V=C/n
Quartz: (3×10^8)/(1.54)=1.948×10^8 m/s
The higher the index of refraction the slower light will travel, so light will be slower in ruby.
Why do stars more massive than the sun have a higher surface temperature than the sun?.
Answer:
Stars that are more than 40 times more massive than our Sun, cannot expand into a red supergiant. This is because they burn too quickly and lose their outer layers fast. They will reach the blue supergiant stage, or perhaps yellow hypergiant, before returning to become hotter stars.
Explanation:
Answer:
Cause there bigger so they have a more hotter surface.
Which of these
is a term for the
process of
wearing rock
down by
friction?
A. rusting
B. dissolving
C. abrasion
D. exfoliation
Answer: C.
Explanation: Abrasion is where two things rub together causing friction, which in turn wears the rock down.
A red, 400Kg bumper car is moving to the right at 2m/s. The red bumper car collides head on with a blue bumper car with a combined driver/car mass of 600kg and a velocity of 1m/s. The collision was elastic. If the blue car bounced backwards at a velocity of 0.25m/s, what was the final velocity of the red car?
Based on the principle of the conservation of linear mometum, the recoil velocity of the bliue car is 3.1 m/s.
Principle of conservation of linear momentumThe principle of conservation of linear momentum states that; the total mometum before collsion is equal to the total momentum after collision.
Now;
m1u1 + m2u2 = m2v2 + m2v2
(400Kg * 2m/s) + (600kg * 1m/s) = (600kg * 0.25m/s) + (400Kg * v)
800 + 600 = 150 + 400v
800 + 600 - 150 = 400v
v = 800 + 600 - 150/400
v = 3.1 m/s
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Block x of mass m slides across a horizontal surface where friction is negligible. Block x collides with block y of mass 2m that is initially at rest, as shown in figure 1. After the collision, both blocks slide together with a speed vs , as shown in figure 2. What is the kinetic energy of the two-block system before the collision?.
The kinetic energy of the two-block system before the collision will be [tex]\frac{9}{2} MV_S^2[/tex]. Momentum get conserved during the collision.
What is collision?The abrupt, violent coming together in direct contact of two bodies is known as the collision.a falling object and a floor are examples of collision.
According to the law of conservation of momentum, the momentum of the body before the collision is always equal to the momentum of the body after the collision.
According to the law of conservation of momentum;
Momentum before collision =Momentum after collision
[tex]\rm MV+2m(0)=(3M)V_S\\\\ V= \frac{3MV_S}{M} \\\\ V= 3V_S[/tex]
Velocity of the block before collision is [tex]\rm 3V_S[/tex].
The kinetic energy of the two-block system before the collision is found as;
[tex]\rm KE = \frac{1}{2} mv^2 \\\\\ \rm KE = \frac{1}{2} m(3V_S)^2 \\\\\ \rm KE = \frac{9}{2} MV_S^2[/tex]
Hence, the kinetic energy of the two-block system before the collision will be [tex]\frac{9}{2} MV_S^2[/tex].
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A collision is any situation in which two or more bodies quickly exert forces on one another.
Thus, The momentum of the body prior to the contact is always equal to the momentum of the body following the impact, according to the law of conservation of momentum.
The difference between the system's total kinetic energy before and after a collision can be used to categorize collisions in physics:
The collision is said to as being inelastic if the majority or all of the total kinetic energy is lost (dissipated as heat, sound, etc. or absorbed by the objects themselves); such collisions involve the objects coming to a complete stop.
Thus, A collision is any situation in which two or more bodies quickly exert forces on one another.
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If a fossil contains 60% of its original carbon, how old is the fossil
What is the origin of all stars? supernova dwarfs protostars nebulae
Answer:
Nebulae
Explanation:
Hope this helps!
Answer:
D nebulae
Explanation:
Daily Task $18.3: Homework/Classwork 1. 1.1 The speed of sound in air is about 330 m-s'. A lightning bolt strikes a tree that is 1,5 km away from you. Calculate the time from the moment that you see the lightning flash until you hear the thunder that accompanies it.
Answer:
sup cuh, the answer is, 15 5/8 mm3
Explanation: i did the math.
What do air masses have throughout?
Similar temperature and moisture properties.
Similar air pressure and wind speed.
Answer:
They have similar temperatures and moisture properties.
⚠️PLEASE HELP!!⚠️ Which two statements describe how convection currents transfer thermal energy in earths oceans?
Answer:
The answer is D & B
Answer: B and D
Explanation:
Which phenomena support only the wave theory of light? check all that apply. reflection refraction diffraction interference photoelectric effect
The phenomena that support only the wave theory of light are Diffraction and Interference.
What is a lightwave?Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that is perceived by the human eye.
The light sometimes acts like a particle and sometimes like a wave, yet the diffraction and interference are proof of the light's wave nature.
First of all, as a definition, interference is an effect caused by the superposition of two systems of waves (from two different sources). (As an example, the interference -distortion- in radio waves)
Diffraction, by the other hand, refers to several events that occur when a wave meets an obstacle. (usually described as bending of waves around obstacles like the water waves- and in other cases as the dissemination of waves, once they passed small openings)
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Answer:
interference, diffraction, scattering, dispersion, polarisation etc.Explanation: edge
what is the most effective way to convert atms to pascals
Answer:
1 Atm (atmospheric pressure) is equal to 101325 pascal (Pa). To convert atm to pascal, multiply the atm value by 101325. atm to pascal formula. Pa = atm * 101325.
Explanation:
What is the function of the load in
an electric circuit?
A. The load is the source of the energy.
B. The protons flow through the load.
C. The load is whatever is receiving the energy in
the circuit.
D. The load safely opens and closes the circuit.
The function of the load in an electric circuit is it safely opens and closes the circuit. Thus, the correct option is D.
What is load in an electric circuit?An electrical load is an electrical component or a portion of the electric circuit which consumes electric power, such as electrical appliances and lights inside the house. The electric loads may also refer to the power consumed by a circuit. This is opposite to a power source, such as a battery or a generator, which produces electric power.
The base load power plants typically are the coal-fueled or nuclear plants due to their low-cost fuel and steady state power they can produce in a plant. The hydropower and geothermal power plants can also be used for the purpose of base load electricity generation if those resources are regionally available.
Therefore, the correct option is D.
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Use the drop-down menu to complete the paragraph. tungsten wire is used as the filament in light bulbs. it glows white-hot as current passes through it. tungsten is used in light bulbs because its high converts electric energy into light and heat.
Answer:
Resistance / Edge 2022
Explanation:
This is late, but just in case someone needs the answer. Hope this helps!
(*^▽^*)
Tungsten metal is used exclusively for making the filament of electric bulbs because it has a very high melting point
What is a tungsten bulb?Tungsten metal is used exclusively for making the filament of electric bulbs because it has a very high melting point. Due to its high melting point, the tungsten filament can be kept white-hot without melting away
Tungsten wire is used as the filament in light bulbs. It glows white-hot as current passes through it.
Tungsten is used in light bulbs because its high resistivity converts electric energy into light and heat.
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