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A 2.55 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.215 s, what is the average force exerted on the ball by the wall?
A 12.9-g mass is suspended 3.45 cm above a nonconducting flat plate, directly above an embedded charge of q. by how much will the mass be changed
An extension cord is used with an electric weed trimmer that has a resistance of 18.3 ?. Determine the resistance of the extension cord
The distance between the centers of the wheels of a motorcycle is 150 cm. The center of mass of the motorcycle, including the rider, is 85.5 cm above the ground and halfway between the wheels. Assume the mass of each wheel is small compared to the bo..
If a cell’s membrane thickness doubles but the cell stays the same size, how do the resistance and the capacitance of the cell membrane change?
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.150\muC on each plate. What is the surface charge density on each plate
Suppose you carry a bag of groceries weighing 100 N from your car to your kitchen, a distance of 61 m, without raising or lowering the bag
Calculate the magnitude of the angular momentum of the Mars due to its rotation around an axis through the north and south poles, modeling it as a uniform sphere.
The battery charger for an MP3 player contains a step-down transformer with a turns ratio of 1:25, What voltage does the secondary coil of the transformer provide
A horizontal wire carries a current I 1=80 A. A secondwire is suspended parallel to it. If the second wire carries 20 Aand has a mass per unit length of 0.2 g/m,
A cyclist starts from rest and pedals so that the wheels make 7.6 revolutions in the first 4.9 s. What is the angular acceleration of the wheels
A rock climber throws a small first aid kit to anotherclimber who is higher up the mountain. What is the vertical height between the two climbers
The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 3.89 × 10-14 J/m3
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