Pouring water on yourself and drying naturally (vs. toweling off) cools you
because
O
A. the thermal energy of the water is decreasing.
O
B. the water is colder than you are.
O
C. the water is using heat to undergo a phase change.
O
D. the water's latent heat of vaporization is being pulled from your
body.

Amplitude is a measure of a waves a; speed b; distance c; energy d; frequency

Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude f due to the other. with time, charge gradually leaks off of both spheres. when each of the spheres has lost half its initial charge, the magnitude of the electrostatic force will be

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?