Two students suggest different functions for the battery plays a flashlight.
Student A: "The battery supplies the charge which allows the light bulb to light. When the battery no longer works, it is because it has run out of charge."
Student B: "The battery pumps the charge around the circuit. The charge itself comes from the conducting elements of the circuit; the battery supplies the energy to pump this charge. When the battery no longer works, it is because the energy-producing chemicals have been consumed."
(a) Which student (A or B) do you agree with?

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.

Asquare 1m x 1m plate is shown below. all four of its edges are kept at 0 co. at t=0the temperature distribution is given by: y xtsins n75)=.a) using separation of variables determine the temperature distribution t(x, y,t)along the plate at any time t. b) discretize the heat conduction equation +=22222 txtusing a second-order centered difference scheme for the two second derivatives and a first-order forward euler scheme for the first derivative. using von neumann stability analysis, determine the stability criterion for the proposed discretization scheme in terms of , hand t. solve for the maximum allowable time step tmax