What is the change of velocity divided by interval of time

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system

Identify some abiotic characteristics of the tundra biome.

Identify the type of heat transfer occurring when chocolate melts in your hand