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Ball is thrown upward from edge of building that is 100m tall and then free falls down to earth. Elapsed time among the throw and the ball hitting the ground is 6.5 sec. What is the initial velocity?
Jerry applies a force of 155 N to the propeller. The distance of the from where the force was applied to the axis of rotation is 1.19 m. What is the torque on the propeller
question1a 2 kg ball of clay travelling west at 10 ms collides with 1 kg ball of clay travelling north at 5 ms. what is
the potential energy of a +5x10-6C charge decrease from 0.17J when it is moved from point A to point B. What is the change in the electric potential between these two points
A woman on a bridge 71.0 m high sees a raft floating at a constant speed on the river below. She drops a stone from rest in an attempt to hit the raft. The stone is released when the raft has 6.60 m more to travel before passing under the bridge. ..
A spring has a force constant of 323 N/m and an unstretched length of 6 cm. One end is attached to a post that is free to rotate in the center of a smooth table, as shown in the top view below. The other end is attached to a 4-kg disk moving in un..
q1. a cannonball shot with the initial velocity of 133 ms at an angle of 59deg follows a parabolic path and hits a
A 0.70-kg disk with a rotational inertia given by MR2/2 is free torotate on a fixed horizontal axis suspended from the ceiling. A string is wrapped around thedisk and a 2.0-kg mass hangs from the free end.
A 27-ft chain with mass density4 lb/ft is initially coiled on the ground. How much work in ft-lbs is performed in lifting the chain so that it is fully extended (and one end touches the ground
Three charges, +2.5 ?C, -4.8 ?C, and -6.3 ?C are located at (-0.20 m, 0.15 m), (0.50 m, -0.35 m), and (-0.42 m, -0.32 m), respectively
One car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 7.5m/s , What were the original speeds of the two cars
A 24V battery is connected in series with a resistor, R=4 ohms and an inductor L=2H. What is the energy stored in the inductor
You use a spring (K=89N/m) to pull a 45kg box across the rough floor (μ=0.13). The spring stretches 3m. What is the horizontal acceleration of the box
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