A ping pong ball is thrown horizontally out of a window 30m above the ground. If the initial velocity of the ball os 20.0 m/s, how far will the ball move horizontally before it hits the ground?

Question 9: use your experiences from questions 6, 7, and 8 to you state a general rule for identifying the three declination ranges given the observer's latitude.

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.