Find R3 and V0 from the circuit

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.