A60-kologram ball and a 3.0 kilogram ball are initially at rest on a frictionless, horizontal surface. Once a compressed spring between the balls is released, the 60-kilogram ball moves to the right at 50
meters per second, as shown below
50m's
3.0 kg www. w
6.0 kg
Frictionless horizontal surface
Which of the following is the speed of the 3.0 kilogram ball after the spring is released?
A
71 m/s
BO 25 m/s
c
10 m/s
D
20 mis

How have the competing explanations' experiments on atoms affected the development of the atomic model?

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.