Choose the best definition of vectors from the following list.
a. quantities described by both speed and movement
b. quantities described by both velocity and acceleration
c. quantities described by both force and gravity
d. quantities described by both magnitude and direction

Drag each item into the proper state of matter category.

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.

Atorque acting on an object tends to produce a. equilibrium b. rotation c. linear motion d. velocity e. a center of gravity