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A 300-g block is dropped onto a vertical spring with spring constant k =180.0 N/m. The block becomes attached to the spring, and the spring compresses 44.8 cm before momentarily stopping. a. While the spring is being compressed, what work is done on the block by its weight? b. While the spring is being compressed, what work is done on the block by the spring force? c. What is the speed of the block just before it hits the spring? (Assume that friction is negligible.) d. If the speed at impact is doubled, what is the maximum compression of the spring?
Find out the precession period of the axis
A golf ball strikes a hard, smooth floor at an angle of 30 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impuls..
Two lenses that are L = 42 cm apart are used to form an image, as shown in figure. Find the distance from lens and magnification of the image.
A 10 cm long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 4.8 nC, is 4.2 cm from the center of the rod. What is the magnitude of the force of the bead.
A speedboat moving at 30 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of negative 3.5 m/s^2 by reducing the throttle. How long does it take boat to reach the buoy.
As you travel every day to campus, the road makes a large turn thatis approximately an arc of a circle. What is the maximum safe speed forthe turn when the road is wet
A transmitter is operating at 4.00 kW of power. what is the average intensity of the signal 8.00 km from the transmitter
what is the magnetic field between the rails. A lead ball is dropped into a lake from a diving board 6 above the water. After entering the water, it sinks to bottom with a constant velocity equal to the velocity with which it hit the water. The bal..
The magnitude of a uniform electric field between the two plates is about 2 × 105 N/C. If the distance between these plates is 0.1 cm
Find out the magnitude of angular acceleration of the wheel
A model rocket rises with constant acceleration to a height of 3.8 , at which point its speed is 26 m/s How much time does it take for the rocket to reach this height.
Compute the index of refraction of the gas
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