Why does earth rotates about it's axis?

An apple in a tree has a gravitational store of 8J. As it falls, it accelerates constantly until it hits the ground. What is the apple's maximum kinetic energy store? Explain your answer.

when electrons are excited to differnt energy levels, the average radii from the nucleus also changes. Rank the following electron energy states according to the average distance of the electron from the nucleus.

Explaining How Temperature Affects the Spe Does sound travel faster in a warm room or a cold room? Explain your answer.

The radius of the planent venus is nearly the same as that of the earth, but its mass is only eighty percent that of the earth. If an object weighs w on the earth, what does it wiegh on venus

Which physical quantity is scalar in nature?

Reimbursement means that a client is A. able to apply for healthcare insurance and refunded for a partial sum of the payment plan by the state. B.

Meg runs a 10km race in 45 minutes (0.75 hours). What was her speed in kilometers per hour? a. 22 km/hr b. 7.5 km/hr c. 4.5 km/hr d. 13 km/hr

If you are an astronaut slowly drifting away from the space station, you might be able to drift back to the station by throwing a 555-kg tool rapidly in the direction that you are traveling (away from the station) A. False B. True C. Don't ask me D.

The loss of an electron from a neutral helium atom results in

What happens during the intake and compression strokes of a four stroke engine?