Which of the following statements describes the
relationship between the epicenter and focus of
an earthquake?
a. the focus is the point on earth's surface where
the epicenter of an earthquake is located.
b. the epicenter is the point on earth's surface
that lies directly above the focus.
c. the epicenter is the point where an
earthquake occurs, and the focus is where
seismic waves reach earth's surface.
d. the focus is deeper within the earth than the
epicenter is.

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?