The center of mass of a pitched baseball or
radius 3.91 cm moves at 33.6 m/s. the ball
spins about an axis through its center of mass
with an angular speed of 52.1 rad/s.
calculate the ratio of the rotational energy
to the translational kinetic energy. treat the
ball as a uniform sphere.

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.

Does current flow through or across a resistor?

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.