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A pool cue strikes a 0.16 kg billard ball with an average force of 11 N. the cue remains in contact with the ball for 0.065s. the ball was intially at rest. what is the final speed of the ball
A car travels along a road at an average speed of 40km/h andreturns along the same road at an average speed of 60km/h. Calculate the average speed for the round trip
When a synchronous motor is running at synchronous speed, the damper windingproduces(A) damping torque.(B) eddy current torque.(C) torque aiding the developed torque.(D) no torque.
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; What is the time the ball is in the air
A gardener pushes a box of tools across a driveway by applying a 22.5- N force that pushes downward at an angle of 23.1 o, How much work is done if the box moves 2.55 m in the horizontal direction
A sled and rider with a combined mass of 50 kg are at the top of a hill 20 m above the level of ground below. After the push, what is the total mechanical energy of the sled and rider at the top of the hill
A block of mass 0.243 kg is placed on top of a light, vertical spring of force constant 4 825 N/m, To what maximum height above the point of release does it rise
A model rocket is constructed with a motor that can provide a total impulse of 39.0 N·s. The mass of the rocket is 0.229 kg. What is the speed that this rocket achieves when it is launched from rest? Neglect the effects of gravity and air resistance.
With its wheels locked, a van slides down a hill inclined at 36.0 to the horizontal. Find the acceleration of this van if the hill is icy and frictionless.
Find out the magnitude of the acceleration of the electron. How large is the pulling force it the wagon is moving with a constant speed.
The two charges in the figure above are separated by a distance d = 5.00 cm, and Q = +5.70 nC. Find the electric potential at B
While a roofer is working on a roof that slants at 39 degree above the horizontal, he accidentally nudges his 89 Newton toolbox, causing it to start sliding downward, starting from rest. determine how fast will the toolbox be moving
An electron of mass 9.11x10^-31 kg has an initial speed of 3.00x10^5 m/s. Determine the magnitude of the force exerted on the electron
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