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.

A large fraction of the ultraviolet (UV) radiation coming from the sun is absorbed by the atmosphere. The main UV absorber in our atmosphere is ozone, / (/rm O_3/). In particular, ozone absorbs radiation with frequencies around 9.

The droplets on a glass of ice water are a result of water vapor releasing energy and changing to water droplets.

DUL What is the difference between velocity and speed?

A space ship traveling east flies directly over the head of an inertial observer who is at rest on the earth's surface. The speed of the space ship can be found from this relationship:.

Assume the light waves start out as unpolarized white light. How do light waves incident on the Polarizer and Analyzer behave at their respective angles?

A large body of air hats has similar properties of a temperature and moisture is a

An ice rink is 200 feet long and 85 feet wide. The four corners of the rink are rounded to a radius of 24 feet. What is the surface area of the rink? Round the answer to the nearest square foot.

Which statement is correct about gasoline when it is burned? Heat energy is created by the gasoline. The total energy of the gasoline decreases. Chemical energy in the gasoline is destroyed. Chemical energy is transformed into heat energy.

The tilt of the Earth's axis of rotation changes over a period of 41,000 years. Which of these statements best predicts a long term effect of the changes in the tilt of the Earth's axis of rotation? a. The Earth's climate would change. b.

What do keratinized cells form?