A 20-kg dog slides down a ramp and stops after sliding 4-m across a gravel surface that applies 35N of friction. Calculate the heat energy of the dog
across the gravel.

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe