Courtney is picking out some movies to rent, and she has narrowed down her selections to 66 horror films, 44 dramas, 66 documentaries, and 77 comedies. How many different combinations of 1010 movies can she rent if she wants all 44 dramas?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface

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.