Graphite is a form of pure carbon that
a. exists in the shape of a hollow ball
b. is formed at very high temperatures
c. has layers that can slide past each other
d. is arranged in long, hollow cylinders

Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.