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Two kids are playing a game in which they try to hit a box on the floor with a marble fired from a spring loaded gun that is mounted on a table. The target box is horizontal distance D = 2.20 meter from the edge of the table. Bobby compressed the spring 1.10 centimeter, but the center of the marble falls 27.0 centimeter short of the center of the box. Find how far should Rhoda compress the spring to score a direct hit? Suppose that neither the spring nor the ball encounter friction in the gun.
A rotating wheel requires 6.00 s to rotate 30.0 revolutions, What is the constant angular acceleration (in rad/s) of the wheel
If there had been no explosion, the shell would have landed a distance from the mortar. Suppose that air resistance and the mass of the shell's explosive charge are negligible. Determine the distance from the mortar at which the larger piece of th..
A 60 kg woman stands 2.5m from the center of a horizontal turntable. The turntable's mass is 150 kg and its radius is 4 m. Initially they are both at rest, what is the turntable's angular speed with respect to the ground if she starts walking clockwi..
Two point charges Q1 = +5.90 nC and Q2 = ?1.70 nC are separated by 45.0 cm. What is the electric potential at a point midway between the charges
An 80.6 kgastronaut is working on the engines of his ship, which is driftingthrough space with a constant velocity. how long does it take the astronaut to reach the ship
Find the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person (1.5m ) from an SR-71
A 69-g firecracker is at rest at the origin when it explodes into three pieces. Find the velocity of the third piece
Consider a theoretical head-on collision between two carts of equal mass and equal speed. What is the total momentum after the collision
A motorcycle has a constant speed of 28.1 m/s as it passes over the top of a hill whose radius of curvature is 130 m. Find the magnitude of the centripetal force
A 4.9 kg particle and a 2.7 kg particle have a gravitational attraction with a magnitude of 2.6 ? 10-12 N. What is the gravitational potential energy of the two-particle system
q1. for years marine scientists were mystified by sound waves picked up by underwater microphones in the pacific ocean.
a grade 30 cast iron pressure vessel has a sealed head diameter of 20 inches. it uses ten 1 14 unf steel studs that are
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