What are the requirements for a doctoral degree in psychology, and what career opportunities are available to students with
this degree?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?

The star nearest to our sun is proxima centauri, at a distance of 4.3 light-years from the sun. how far away, in km, is proxima centauri from the sun?