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A spring loaded gun is used to launch a ping pong ball (mass 4g) at an angle of 50 degrees with the horizontal. The spring has constant k=40N/m and the initial compression of the spring was 3cm. Ignoring air resistance, how far does the ping pong travel if it is launched from the ground (lands at the same height it was shot from)?
A 3.00-m-long, 400 kg steel beam extends horizontally from the point where it has been bolted to framework of a new building under construction. A 74 kg construction worker stands at the far end of the beam.What is the magnitude of the torque abo..
The puck has a mass of 0.140kg. Its original distance from the center of rotation is 40.0 cm, and it moves with a speed of 70cm/s. The string is pulled downward 15cm by the hole in the frictionless table. Determine the work completed on the puck.
Two particles are moving along the x axis. Particle 1 has a mass m1 and a velocity v1 = +3.7 m/s. Find the ratio m1/m2 of the masses of the particles
Looking out the window of a train you observe the passengers on a second train moving in the opposite direction at a constant velocity. determines which of the two trains is actually moving
A member of an aircraft maintence crew wears protective earplugs that reduce the sound intensity by a factor of 350. What sound intensity level would the crew member experience
A 0.65-g particle remains stationary when placed in a uniform electric field (on earth). What is the electric field's direction
A parachutist and her parachuting equipment have the combined mass of 121 kg. Her terminal velocity is 5.30 m/s with the parachute open. Her parachute has a cross-sectional area of 35.80 m^2. The density of air at that altitude is 1.23kg/m^3. What is..
A spark plug in an automobile engine consists of two metal conductors that are separated by a distance of 1.1 mm, What is the magnitude of the potential difference V between the conductors
A ladybug is sitting at the center of a turntable. The turntable is rotating on a frictionless bearings and it rotates without assistance from a motor. As the ladybug walks to the edge of the turntable, what happens to combined angular momentum of..
Assume charge builds up on the cloud and on the ground until a uniform electric field of 4.00 multiplied by 106 N/C throughout the space between them makes the air break down, What is the maximum charge the cloud can hold
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
A point charge of +6.3? C is located 0.31 m from a second point charge of -4.8? C. What is the absolute magnitude of the force on each charge?
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