What part of the crane is used to lift and lower the load?
a. block
b. boom
c. hoist
d. jim?

An astronomer at the equator measures the doppler shift of sunlight at sunset. from this, she calculates that earth’s tangential velocity at the equator is 465 m/s. the centripetal acceleration at the equator is 3.41  10 2 m/s 2 . use this data to calculate earth’s radius.

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?