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Alivia
How is pounds of force measured
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Tiffany
In an air conditioner, a substance that easily evaporates and condenses is used to transfer energy from a room to the air outside. when the substance evaporates,

a. energy is transferred by conduction.

b. it absorbs energy as heat from the surrounding air. selected:

c. it transfers energy as heat to the surrounding air. this answer is incorrect.

d. energy is transferred by convection.
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Saul
If a particle undergoes shm with amplitude 0.21 m, what is the total distance it travels in one period?
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Kline
The main difference between a radio wave and a sound wave is their different.

A) wavelengths.

B) frequencies.

C) amplitudes.

D) energies.

E) modes of travel.
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Janiyah Kerr
A student is measuring the effects of an electric circuit on a compass, and he is testing to see increasing the current will cause the compass needle to change direction faster. He does one trial using a 9-volt battery and another trial using a 1.5 volt battery. He takes accurate data. Based on good experimental design, which would improve his experiment?

A. he should use batteries of the same voltage but from different manufacturers to show he has used different variables.

B. He should add a nonworking Compass to act as a control.

C. He should repeat the test with three additional batteries of varying voltages to demonstrate the reproducibility of results.

D. He should use only one battery but do several trials using different circuit designs to ensure he is appropriate test groups.

(I think it's a or c)
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Sienna Frank
A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on the moon. there is no air on the moon. what happens?
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Deangelo
Imagine a Carnot engine has a hot reservoir of 680 K and a cold reservoir of 220 K. What is the efficiency of the engine?
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Saniya Oliver
The loudness of a sound is its frequency. true or false?
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Edgar Ayers
Will loud sounds from traffic near a school break glass objects inside the school
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Ingrid Jackson
A bat traveling at 10m/s for 10 seconds has traveled how much distance
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Marlie
A wave is traveling through a medium. as it travels, it displaces particles of matter in the same direction as the wave is traveling. this type of wave is a
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Guest
Abstract on which beverage has the most gass between coke, orange juice and water
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Guest
Which property is expressed in g/cm3? A. density B. mass C. volume D. buoyancy
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Guest
How would decreasing the time it takes you to run a certain distance affect your speed
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Delacruz
What other animals are giraffes related to
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