The beam shown in the figure is subjected to two forces. What would be the resultant
moment about point A produced by the
two forces.
F1= 375 N
F2 = 500N
5
4
3
8 m
8
- 6 m-5m-​

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

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.

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