If you represented each star by a grain of sand, how much sand would it take to represent all the stars in the universe?

a. more than all the sand on all the beaches on earth
b. all the sand on the beaches in the united states
c. all the sand on the beaches of california
d. all the sand on miami beach
e. all the sand in a typical playground sandlot

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

The solid that is formed and usually sinks to the bottom of a solution is the