Hair grows at an average rate of 3 x 10.9 m/s. how long will it take to grow a 10 cm strand?

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

Distinguish between linear momentum and angular momentum

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.