0.500 kg ball traveling at 1.00 m/s to the right hits a second ball of equal mass that is initially at rest. after the perfectly elastic collision, the second ball travels at 0.543 m/s at a 57.2o angle upward from the point of contact.
draw a before and after diagram of this collision.
write the momentum equations in both the x and y direction.
using the information from the previous problem, determine the speed and angle of the first ball.

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s. t.p.?

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.