The sound travels through helium significantly more quickly than through air when a flute is filled with it as opposed to air since helium is substantially less thick than air, sound moves through it more quickly.
The frequency of a sound wave in which is the quantity of vibrations per second and it determines the pitch of a sound. Since helium has a higher sound speed than air, the sound waves created by the flute will move more quickly and at a higher frequency, producing a higher-pitched sound.
In a place where refrigeration is not possible a person attempts to keep a bottom cool by using
the procedure ustrated in Fo.72
damp cloth
bottle
mik
bowl
water
Fig. 7.2
Explain in terms of molecules why this procedure would be success
Here, the water in the wet cloth evaporates and make the heat also evaporated and keep the container of milk cool and devoid of microbes.
What is refrigeration ?Refrigeration is the process of keeping materials in freezing point temperature and the ultimate cooling prevent the microbes attacking the food materials.
If refrigeration is not possible in a place, we can keep a material cool by placing it in a bowl of water as seen in the image and the container must be closed by a wet damp cloth.
Here, when the milk bottle is placed in the water bowl and closed by the cloth , water tends to evaporate through the cloth for which heat energy is needed. So it takes away the heat inside by evaporation and keeps the container and material inside cooler.
Find more on evaporation:
https://brainly.com/question/5019199
#SPJ9
Any change in SPEED or DIRECTION is referred to as _____
Answer:
Acceleration
Explanation:
I just know trust me I have this answer (sorry if I out ice) and I got it right
Answer: I would say the answer to this question is Acceleration
Explanation:
Answer question in the picture
The kinetic energy of the roller coaster car is 40, 914. 08 J.
How to find the Kinetic energy ?The kinetic energy (KE) of a moving object is given by the formula:
KE = ( 1 / 2 ) mv ²
Where m is the mass of the object and v is its velocity.
In this case, the mass of the roller coaster car is 311.11 kg and its velocity is 16.22 m/s. Substituting these values into the formula, we get:
KE = ( 1 / 2 ) ( 311.11 kg )( 16.22 m/s) ²
KE = (0.5) (311.11 kg) ( 263. 02 m ² /s ²)
KE = 40, 914. 08 joules (J)
Find out more on kinetic energy at https://brainly.com/question/25959744
#SPJ1
How much current would be traveling perpendicular to a 2.90 T magnetic field when a force of 57.80 N is present in an 90.70 meter wire?
A magnetic field is a vector field that explains the magnetic effect on moving charges, currents, and magnetic materials.
What is called magnetic field?The magnetic field is the area around a magnetic material or a moving electric charge where the power of magnetism works. A diagram of the magnetic field that depicts how a magnetic force is spread within and around a magnetic substance.
The region encircling a magnetic dipole or a moving charge generates a magnetic field. The SI measure of field strength for magnetic fields is Tesla (T). The magnetic field is the region around a magnet where one can feel the magnetic pull.
Learn more about Magnetic field, Visit
https://brainly.com/question/14848188
#SPJ1
Miguel is riding a skateboard down the street road 150 m/min. if his velocity remains constant how far will Miguel skate in 3.4 minutes?
The distance travelled by Miguel in a time of 3.4 minutes is 510 m.
What is meant by constant velocity ?An object in motion is said to have constant velocity when the object travels equal displacements in equal intervals of time. That means the velocity is not changing with time.
Here,
The velocity of the skateboard, v = 150 m/min
Time taken by Miguel, t = 3.4 min
So,
The distance travelled by Miguel in 3.4 min is,
s = v x t
s = 150 x 3.4
s = 510 m
Hence,
The distance travelled by Miguel in a time of 3.4 minutes is 510 m.
To learn more about constant velocity, click:
https://brainly.com/question/21261928
#SPJ9
A solid will float in a liquid if it is less dense than the liquid, and sink if it is more dense than the liquid. If the density of seawater is 1.025 g/mL, which types of plastics would definitely float in seawater? JUSTIFY your answer.
Explanation:
Plastics with a density less than or equal to 1.025 g/mL will float in seawater, while plastics with a density greater than 1.025 g/mL will sink.
Here are some examples of plastic densities:
Polyethylene terephthalate (PET) has a density of approximately 1.38 g/mL, so it will sink in seawater.
Polypropylene (PP) has a density of approximately 0.9 g/mL, so it will float in seawater.
High-density polyethylene (HDPE) has a density of approximately 0.95 g/mL, so it will float in seawater.
Polystyrene (PS) has a density of approximately 1.05 g/mL, so it will sink in seawater.
Based on the above examples, we can see that plastics such as polypropylene and high-density polyethylene will definitely float in seawater, while others such as polyethylene terephthalate and polystyrene will definitely sink. Other types of plastics with densities close to 1.025 g/mL may float or sink depending on their exact density and the conditions of the water, such as temperature and salinity.
Compare the force required to loosen the bolt using the 1/4 ratchet compared to 3/8 ratchet or breaker bar.
TO be completely fair here when you put these fractions together 3/8 needs more force then 1/4 as 3/8 is already closer to half of 4 as a fraction aka 2/4
Cavendish did his experiment using lead balls. Suppose he had used equal masses of copper instead.
Would his value of G be the same or different? Explain.
Answer:
The value of G is constant (does not depend on masses M1 and M2)
However, F (force) would be smaller and harder to measure
The gravitational constant is proportional to mass and not density
What is the answer to this assignment?
The vertical component of the force vector 42 N is 7.29 N and the that of the vector B is 26 N. Then the resultant vector is 18.71 N. The equilibrant is the same but opposite in direction ie., - 18.71.
What are vectors ?Vectors are physical quantities having both magnitude and direction. The quantities with magnitude only are called scalar quantities. Force, work done, displacement , momentum etc are vector quantities.
The resultant of two vectors depends on their magnitude and direction. The given two vectors A and B are in opposite directions. Hence, the resultant vector will be their difference in magnitude.
Vertical component of vector A = 42 cos 80 = 7.29 N
component of vector B = 34 cos 40 = 26 N.
Then, resultant vector = 26 N - 7.29 N = 18.71 N
equilibrant = - 18.7 N.
Find more on vectors:
https://brainly.com/question/24256726
#SPJ1
If natural gas were to be our primary way for generating electricity, what effect would this have on individuals and the environment?
If natural gas were to be our primary way for generating electricity, it would have both positive and negative effects on individuals and the environment.
One of the positive effects is that natural gas is a cleaner-burning fossil fuel compared to coal and oil. It emits less greenhouse gases and pollutants, which can result in improved air quality and human health benefits. Additionally, natural gas is abundant and domestically produced, which can lead to greater energy independence and reduced reliance on foreign oil.
However, there are also negative effects of using natural gas as the primary source of electricity. One of the biggest concerns is the environmental impact of hydraulic fracturing or fracking, which is a common method of extracting natural gas from the ground. Fracking can lead to water contamination, air pollution, and other environmental risks. Additionally, natural gas is still a fossil fuel, which means that it is a non-renewable resource and will eventually run out.
Furthermore, relying on natural gas for electricity generation can also have negative impacts on individuals in terms of energy costs. While natural gas prices have been relatively low in recent years, they can still be subject to price fluctuations, which can result in higher energy bills for consumers. Additionally, natural gas pipelines and infrastructure can be prone to leaks and explosions, which can pose safety risks for nearby communities.
In conclusion, while natural gas can offer some benefits as a primary way for generating electricity, it is important to weigh the potential negative effects on individuals and the environment. Alternative sources of energy such as renewable resources should also be considered to promote a more sustainable and environmentally-friendly energy future.
Think about this hypothetical (not real) situation: Scientist discovered 2 new planets- Planet 11 and Planet Will. Both planets have the exact same diameter. However, Planet 11 has a MUCH stronger force of gravity. What can you infer about the relative MASS of each planet? Explain your answer.
Please answer in a full paragraph! :)
Based on the information provided, if Planet 11 has a much stronger force of gravity than Planet Will, we can infer that Planet 11 has a greater mass than Planet Will. This is because the force of gravity is directly proportional to the mass of an object. A planet with a greater mass will exert a stronger gravitational force on objects within its vicinity than a planet with a lower mass, assuming the two planets have the same diameter.
This relationship can be explained by the law of universal gravitation, which states that the force of gravity between two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them. Therefore, if Planet 11 has a stronger gravitational force than Planet Will, it must have a greater mass, assuming that the distance between the two planets is the same.
In summary, the stronger force of gravity on Planet 11 compared to Planet Will implies that Planet 11 has a greater mass than Planet Will.
Cory is driving west in a straight line. After driving for 1.7kilometers, he turns north and drives for 4.3 km. At the end of his drive, what is the magnitude of his displacement vector?
a.3.4 km
b.5.1 km
c.6.0 km
d.4.6 km
Cory's displacement vector has a magnitude of 4.62 km, which is the closest to the 4.6 km value.
What is a displacement vector's magnitude?The length of the arrow is a symbol for the displacement vector's magnitude, which represents the distance between the locations. The arrow's direction corresponds to the displacement vector's direction.
What is the displacement magnitude formula?d = 3 m + 5 m + 6 m = 14 m is the total distance travelled. Visualizing the walking makes it possible to determine the displacement's size. The real distance between A and B is 3 metres, followed by 5 metres from B to D and 6 metres from D to E. |S| =√92+52 = 10.29 m.
To know more about displacement visit:-
https://brainly.com/question/30087445
#SPJ1
Next >
On a transformer with a turn ratio of 72:1, if the power on the primary side is 2 MW, what
is the power on the secondary side?
answer choices:
36 W
2 MW
27.8 MW
36 MW
Answer:
Explanation:
The power on the primary side of a transformer is equal to the power on the secondary side, neglecting losses. This is because power is conserved in a transformer.
Therefore, if the power on the primary side is 2 MW, then the power on the secondary side will also be 2 MW.
So, the correct answer is: 2 MW.
PLEASE HELP ASAP PHYSICS
The speed of the wave is 4 m/s.
option A.
What is the speed of a wave?
The speed of a wave depends on the type of wave and the medium through which it is traveling. In general, the speed of a wave can be calculated by multiplying the wavelength of the wave by its frequency.
In a vacuum, electromagnetic waves (such as light) travel at a constant speed of approximately 299,792,458 meters per second, which is commonly referred to as the speed of light.
For this given question, if the wave oscillates 4 times per second, then the speed is 4 m/s.
Learn more about speed of wave here: https://brainly.com/question/2142871
#SPJ1
If a 550 kg horse is traveling at 20 m/s, how much kinetic energy does it have?
Answer:
KE = 110000 J
KE = 0.11 MJ
KE = 104.1794917935 [tex]BTU_{mean}[/tex]
KE = 26252.857981585 [tex]cal_{mean}[/tex]
The kinetic energy of a moving body can be calculated using its mass and velocity. The kinetic energy of the horse of 550 kg travelling at 20 m/s is 11000 J.
What is kinetic energy ?Kinetic energy of an object is generated by virtue of its motion. When the object starts moving its potential energy starts to convert into kinetic energy.
The kinetic energy of an object is related to its mass and velocity as follows:
Ke = 1/2 mv²
Hence, kinetic energy is directly proportional to the mass and velocity.
Given mass of the horse m = 550 kg
velocity = 20 m/s
then, Ke = 1/2 550 kg × (20 m/s)²
Ke = 11000 J.
Therefore, the kinetic energy of the horse is 11000 J.
Find more on kinetic energy:
https://brainly.com/question/15764612
#SPJ9
why is it important to consider the transfer of energy when building a house
While building a house, it's crucial to take energy transmission into account because homes lose a lot of thermal energy. Radiation, conduction, and convection are three ways they can lose energy.
Why is heat transmission critical in structures?Buildings must consider heat transfer while designing the fabric of the structure as well as the passive and active systems required to provide the desired thermal conditions with the least amount of resource use.
What alters the way heat moves through buildings?The three most crucial variables are temperature, moisture content, and density. Thickness, air velocity, pressing, and ageing time are further considerations. The correlation between the key variables and thermal conductivity is shown.
To learn more about energy transfer visit:
brainly.com/question/18007832
#SPJ1
A closed circuit containing THREE of the same type of resistors has a current of 2 amps and TWO 9V batteries. How much resistance does EACH resistor have, in ohms?
The amount of resistance that each resistor has, in this closed circuit, given the batteries is 3 ohms.
How to find the resistance ?In a closed circuit, the total resistance (R_total) is equal to the sum of the individual resistances. We can use Ohm's law to solve for the resistance of each resistor:
Resistance (R) = Voltage (V) / Current (I)
Using Ohm's law, we can solve for the total resistance (R_total) of the circuit:
= V_total / I
= 18V / 2A
= 9 ohms
Since there are three identical resistors in the circuit, we can divide the total resistance by 3 to find the resistance of each resistor:
= 9 / 3
= 3 ohms
Find out more on resistors at https://brainly.com/question/15570745
#SPJ1
A wheel that has a radius of 70 cm rotates are 5 radians per Second, what is the velocity of the edge of the wheel in Meters per second
Answer:Radius =70cm
Distance covered in one rotation = circumference of wheel =2πr
=2×
7
22
×70
=440cm
Distance covered in 300 rotation =300×440
=132000=
100000
132000
=1.32km
Given that distance of 1.32km is covered in 5 minutes or
60
5
hour.
Therefore,
Speed of cycle =
time
distance
=
(
60
5
)
1.32
=
5
1.32×60
=15.84km/hr
Explanation:
A circuit is built based on this circuit diagram. A diagram of a closed circuit with a power source on the left labeled 12 V. There are 3 resistors in parallel, separate paths, connected to it labeled 3.0 Ohms, 6.0 Ohms and 9.0 Ohms. What is the equivalent resistance of the circuit? 0.61 Ω 1.6 Ω 7.5 Ω 18 Ω
The parallel circuit containing three resistors' equivalent resistance is thus found to be 1.64 ohms.
To what end are ohms put?The electrical resistance measured in Ohms is a measure of a conductor's ability to create a current of one amp when a voltage of one volt is applied across its terminals.
What does ohm mean?Ohm defines the "1 Ohm" measure of resistance as the distance between two places in a wire where 1 volt would push 1 amp, or 6.241 1018 electrons, when applied. Greek letter "," sometimes known as omega and pronounced "ohm," is typically used to denote this value in schematics.
To know more about ohms visit:
https://brainly.com/question/1462314
#SPJ1
Answer:
B or 1.6
Explanation:
A flat coil of wire is placed in a uniform magnetic field that is in the y direction. (i) The magnetic flux through the coil is a maximum if the plane of the coil is where? (Select all that apply. ) in the xy plane in the yz plane in the xz plane in any orientation, because it is a constant (ii) For what orientation is the flux zero? (Select all that apply. ) in the xy plane in the yz plane in the xz plane in any orientation, because it is a constant
Due to theta's value of 90, flux in the x, y, and z planes will actually be zero. As long as the loop stays within the xz plane, which is parallel to the y axis that provides the most area again for passage of a magnetic field,
Flow = BA cos(theta) It will be at its highest if theta is zero and zero is ninety degrees.
The largest region for a magnetic field to flow through during a loop is situated in the xz plane, where theta is 90, is where flux will be zero in the xy plane and the yz plane.
Flow = BA cos(theta) It will be at its highest if theta is zero and zero is ninety degrees. In this situation, theta is 90, hence flux will indeed be 0 in the x, y, and z planes.
To know more about magnetic field click here
brainly.com/question/12244454
#SPJ1
you push a food tray 1.5m along a cafeteria table with a constant force of 18 N. how much work do you do ?
Answer:
27J
Explanation:
Work done =force×distance
Therefore
Work done =18×1.5
Work done =27J
The specific heat capacity of a substance is the energy needed to raise the temperature of 1 __________ of the substance by 1 __________
The specific heat capacity of a substance is the energy needed to raise the temperature of 1 gram of the substance by 1 degree Celsius.
A substance's specific heat capacity (c), often known as its specific heat, is the amount of heat needed to increase 1 gram of that substance's temperature by 1 degree Celsius (or 1 kelvin). It can be expressed as follows:
c = q/mΔT
where q is the heat supplied, c is the constant of proportionality, called specific heat capacity of the body, m is the mass of the substance, and T is the temperature.
Just the type of substance that absorbs or releases heat determines a substance's specific heat capacity. It is an intense property—it doesn't matter how much of a substance there is; only its type does.
To know more about specific heat capacity, refer:
https://brainly.com/question/27641723
#SPJ4
Which of the following provided the best definition as to what is gravity? Group of answer choices What goes up must come down Everything with mass is attracted to everything else with mass Only small things are attracted to larger things Only larger things are attracted to smaller things
The statement that everything with mass is attracted to everything else with mass is the best definition of gravity.
What is gravity?In the field of physics, gravity is a basic interaction that causes all objects with mass or energy to attract one another. This force is present everywhere in the universe, and is the reason why all the planets in the solar system orbit around the sun.
From the group of answer choices, "Everything with mass is attracted to everything else with mass" is correct, since it describes the natural phenomenon by which all objects in the universe are attracted to one another.
The statement "What goes up must come down" is a simple observation of gravity's effects on objects on Earth, but it does not provide a complete definition of the force itself.
"Only small things are attracted to larger things" and "Only larger things are attracted to smaller things" are incorrect, as gravity acts on all objects with mass, regardless of their size.
To know more about gravity, visit:
https://brainly.com/question/14874038
#SPJ1
For the circuit shown in the figure, the current in the 8 resistor is 0.50 A, and all quantities are accurate to 2 significant figures. What is the current in the 2 resistor?
The current through the 2Ω resistor is 9.5A
The terminal voltage is 10.8 V
How to calculatea) The voltage V across 8 Ω resistor is V = I*R = 8*0.5 = 4V
the current through 16Ω resistor is then I = V/R = 4/16 = 0.25 A
the current through 20Ω resistor is then I = current through 8Ω resistor + current through 16Ω resistor = 0.75 A
voltage across 20Ω is V = I*R = 0.75*20 = 15 V
the source voltage is Vs = V8 + V20 = 4+15 = 19 V
therefore the current through 2Ω resistor is
I = V/R = 19/2 = 9.5 A
b) The terminal voltage is
Vterminal = VR = I*R = 0.450*24 = 10.8 V
Read more about resistors here:
https://brainly.com/question/24858512
#SPJ1
A person can push a 50 N box 27 meters. If the person uses 300 Watts of power, how much time will it take?
Answer:
4.5 seconds
Explanation:
For this question, we're gonna use the formula below:
Power = Work / Time
where Power is measured in watts (W), Work is measured in joules (J), and Time is measured in seconds (s).
To solve for Time, we can rearrange the formula as follows:
Time = Work / Power
Now, we need to find the amount of work done in pushing the box:
Work = Force x Distance
where Force is measured in Newtons (N) and Distance is measured in meters (m).
So,
Work = 50 N x 27 m = 1350 J
Now we can substitute the values into the formula for time:
Time = Work / Power = 1350 J / 300 W = 4.5 s
Therefore, it will take 4.5 seconds for the person to push the 50 N box 27 meters using 300 watts of power.
A worker applies a force of 1,050 N to move a crate 22 m. How much work has he done?
Answer:
The work done by the worker can be calculated using the formula:Work = Force x Distance x cos(theta)where theta is the angle between the force and the direction of motion. Since the force is applied in the same direction as the motion, theta is 0 degrees and cos(theta) is equal to 1.So, substituting the given values into the formula:Work = 1,050 N x 22 m x cos(0)Work = 23,100 JoulesTherefore, the worker has done 23,100 Joules of work to move the crate 22 meters with a force of 1,050 N
Explanation:
The momentum of a car traveling in a straight line at 20 m/sec is 24,500 kg times m/sec. What is the cars mass?
To solve for the mass, use and derive the following formula for the momentum problem:
p = mv
m = p / v
where:
m is the mass if the object
p is the momentum (24,500 kg•m/s.)
v is the velocity of the object (20 m/s.)
Solution:m = p / v
m = 24, 500 kg•m/s ÷ 20 m/s
m = 1225 kg.
#BrainlyOnlineEducation
#CarryOnLearning
Observing and blank are on opposite ends of the secretary function
Observing and controlling are on opposite ends of the secretary function.
The secretary function is a model used in organizational behavior to describe the process of selecting the best candidate from a pool of applicants. The model assumes that a decision-maker must choose from a fixed number of candidates in random order, without being able to go back and reconsider candidates that have been passed over. The decision-maker can either accept or reject each candidate, but once a candidate is rejected, they cannot be reconsidered.
In this context, "observing" refers to a decision-making style where the decision-maker takes a passive role and simply observes the candidates as they come, without intervening or taking any action. "Controlling," on the other hand, refers to a decision-making style where the decision-maker takes an active role and tries to control the outcome by setting a high threshold for acceptance and rejecting candidates who do not meet that threshold.
Therefore, observing and controlling are on opposite ends of the secretary function, representing two different decision-making styles that can be used when selecting the best candidate from a pool of applicants.
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.110 kg, initially moves to the right at a speed of 4.60 m/s, while the second block, of mass 0.220 kg, is initially to the left of the first block and moving to the right at 6.90 m/s. Find the final velocities of the blocks, assuming the collision is elastic.
Answer:
The final velocities of the blocks are 3.00 m/s and 8.50 m/s, respectively.
1) Electrical conductivity (EC) measures the amount of ions in the water; we think of it as the amount of minerals in solution, either calcium, potassium, nitrogen, etc. Over time, has the EC increased or decreased significantly (more than 100 S/cm)? (0.5pt) If so, propose why that may have happened. (0.5pt)
2) Ammonia (NH4) is a waste product of fish. Over time, has NH4 increased or decreased significantly (by 0.25 or greater)? (0.5pt) If so, propose why that may have happened. (0.5pt).
3) Nitrite (NO2-) is a form of nitrogen produced by nitrifying bacteria. Over time, has NO2- increased or decreased significantly (by 5 or greater)? (0.5pt) If so, propose why that may have happened. (0.5pt).
4) Nitrate (NO3-) is a form of nitrogen produced by nitrifying bacteria and is food for plants. Over time, has NO3- increased or decreased significantly (by 10 or greater)? (0.5pt) If so, propose why that may have happened. (0.5pt).
The capacity of water to transmit electrical current is determined by its conductivity. The quantity of electrical ions in the water has a direct impact on this ability
What is called electrical conductivity?A material's electrical resistivity, also known as particular electrical resistance or volume resistivity, determines how effectively it opposes electric current. For example, pure water has a high electrical resistivity and is an insulator. A substance that easily permits electric current has a low resistivity. Greek character is often used to denote resistance (rho). The ohm-meter (m) is the SI measure of electrical impedance.
For instance, if the resistance between the sheet contacts on two opposing sides of a solid material square measuring 1 m3 is 1, the material has a resistivity of 1 m.
Learn more about electrical current,
https://brainly.com/question/2264542
#SPJ1