Which is the oldest of the following sports a. soccer b. baseball c. track and field d. football

The slope of a velocity time graph over any interval of time gives the during that interval

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2

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.