What is the acceleration of a 31 kg object pushed with a force of 42N You have a mass of 75.25 kg on Earth, what is your mass on Mars where the acceleration due to gravity is 3.72 m/s2?

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

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.

Convection currents are caused by differences in what two things?