a 10 kg ball moving at 13 m/s strickes a 20 kg ball at rest. after the collision the 10 kg ball is moving with a velocity of 7m/s. what is the velocity of the second ball

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates