(Level 1) A 78 kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. Calculate the skydiver's
(a) ...kinetic energy
(b) ...potential energy.
total mechanical

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1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

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