1. A cart of mass 4 kg moves at a speed of 10 m/s to the right when it encounters a horizontal spring of spring constant 250 N/m. The maximum potential energy stored the spring in bringing the cart to rest is (A) 80 J (B) 200 J (C) 280 J (D) 400 J
2. For the same car and spring as the previous problem, what is the maximum compression distance of the spring?
(A) 1.26 m (B) 1.6 m (C) 2.5 m (D) 8 m

The arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s . 1.) a. precipitation b. water vapor c. icy debris 2.) a. gravitational compression b. biochemical cycling c. radiogenic heating 3.) a, gravity b. magnetic field c. heat energy for plato

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?