Acrate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.52 m/s. the pulling force is 94 n parallel to the incline, which makes an angle of 20.2° with the horizontal. the coefficient of kinetic friction is 0.400, and the crate is pulled 5.02 m. (a) how much work is done by the gravitational force on the crate?

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

Astronomers studying the planet of rhombus have detected sedimentary rock on its surface. one astronomer wonders if material in this sedimentary rock used to be in igneous rock deep in rhombus’s interior. can igneous rock become sedimentary rock? explain your answer.