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A rubber ball of mass 24.5 g is droppedfrom a height of 2.05 m onto a floor. The velocity of the ball is reversed by the collision with the floor,and the ball rebounds to a height of 1.30m. What impulse was applied to the ball during the collision?
q1. a 1.50 kg object is held 1.20 m above a relaxed massless vertical spring with a force constant of 310 nm. the
A thin spherical shell has a radius R=3 m. A constant force F=2 N is applied to the shell, always tangential to the surface of the sphere, What is the mass of the shell
A solid conducting ball with charge +2Q is placed inside aconducting shell. how much charge is on the outer surface of the shell
the law of conservation of momentum applies to a collision between two bodies ifa. they exert equal and opposite forces
A 10,000 kg railroad car is rolling at 2 m/s when a 400 kg load of gravel is suddenly dumped in. What is the railroad cars speed just after the gravel is dumped in.
What is magnitude of the gravitational attraction
The speed of light in a material is 0.52×c. What is the critical angle (in degrees) of a light ray at the interface between the material and a vacuum
Starting from rest, a 12-cm-diameter compact disk takes 2.6s to reach its operating angular velocity of 1600rpm. How much torque is applied to the disk
A line of charge starts at x = +x0 and extends to positive infinity. The linear charge density is ? = ?0x0/x, Determine the electric field at the origin
a wire 2.0mm in diameter and 4cmlong is connected to a 12v battery. if the resistivity of the wire is 3.5 x 10-5 ohm-m
A typical sound level for a buzzing mosquito is35dB, and that of a vacuum cleaner is approximately 69dB. Approximately how many buzzing mosquitoes will produce a sound intensity equal to that of a vacuum cleaner?
A 750 air-track glider attached to a spring with spring constant 10.5 is sitting at rest on a frictionless air track. What is the amplitude of the subsequent oscillations
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