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A thin spherical shell of mass 0.450kg and diameter 0.160 m is filled withalcohol (= 806 kg/m3). It is then released from rest on thebottom of a pool of water. Find the acceleration of the alcohol filled shell as it rises toward the surface of the water.
m/s2
A spring with an unstrained length of 0.069 m and a spring constant of 2.7 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. Calculate the apparent thickness of the plate as viewed from above the water
Two billiard balls of equal mass and speed moving against each other collide and bounce backwards away from each other. compare the forces from each ball on the other
The magnitude of the force of friction acting on the block between A and is 1.2N and points A and B are 0.5 m apart. If the kinectic energies of the block at A and B are 4J and 5.6 J, respectively, how much work is done on the block by the force p..
When you take your 1200 kg car out for a spin, you go around a corner of radius 57.7 m with a speed of 15.7 m/s. The coefficient of static friction between the car and the road is 0.80. Assuming your car doesn't skid, what is the force exerted on it ..
A 0.70 kg ball is moving horizontally with a speed of 9.7 m/s when it strikes a vertical wall. What is the magnitude of the change in linear momentum of the ball
When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 8.00 cm long, What average force was exerted on the nail by the hammer
An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. What is the horizontal force acting on the puck
An object with mass 1.2 kg slides down a smooth ramp. Initial height is 2m. It is a smooth horizontal track (no friction). by how much is the spring compressed by the object
An athlete at a gymnasium holds a 3.0kg steel ball in his hand. His arm is 70cm long and has a mass of 4.0kg. Calculate the magnitude of the torque about his shoulder if he holds his arm
A boat has a mass of 6800 kg. Its engines generate a drive force of 4000 N, find the magnitude and direction of the boat's acceleration
A train with a maximum speed of 60 mph travels between two stations 10,000 ft apart. It has an acceleration rate of 4.00 ft/s2 and requires a distance of 1500 ft. to stop from 60 mph. Sketch (a) acceleration-time, (b) velocity-time, (c) displacement-..
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