A spring is used to launch a marble at a 30o angle. The spring has a constant of 55N/m. The marble has a mass of 0.01kg. Before launch, the spring is compressed by 0.05m. a. Calculate the launch speed of the marble (note: you may assume the spring simply hits the marble, so there is no change in height during the actual launch). (3 points) b. The barrel of the launcher is 1.25m above the floor. Calculate how far the marble lands from the base of the launcher. (6 points

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

What is the momentum of a 2 kg object moving at 15 meters per second

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c