Sonja is riding her bike. She takes her feet

off the pedals to freewheel down a hill.

Describe the energy transfers that take place as the bike travels down the hill.

Ignore friction and air resistance.

We had a homework problem in which the Arrhenius equation was applied to the blinking of fireflies. Several other natural phenomena also obey that equation, including the temperature dependent chirping of crickets.

What measurement can be used to determine the stability of the atmosphere?

The speed of a light wave is dependent upon the properties of the medium. Light travels fastest through a vacuum; slowest through solids. In the case of electromagnetic waves, the speed of the wave depends upon the optical density of that material.

Which is a legacy of the enlightenment?

Describe the seasons on the planet Uranus.

A student in her physics lab measures the standing-wave modes of a tube. The lowest frequency that makes a resonance is 20 Hz. As the frequency is increased, the next resonance is at 60 Hz. What will be the next resonance after this? A. 80 Hz B.

For a satellite to stay in orbit around Earth, it has to be moving forward very fast all the time. What force will make it fall to Earth if it goes too slowly?

A student hangs a balloon from a string then rubs it on their hair and releases it. They rub a second balloon on their hair then move it towards the hanging balloon the moving balloon moves away because ...

Plato and the Soul. A. Plato believed that our souls died with our physical bodies. B. Plato believes our souls were the shadows on the cave walls. C. Plato believed our souls did not exist.

A 1000 kg satellite and a 2000 kg satellite follow exactly the same orbit around the earth. What is the ratio F1/F2 of the gravitational force on the first satellite to that on the second satellite?