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A moving 3.30kg block collides with a horizontal spring whose spring constant is 261 N/m.
The block compresses the spring a maximum distance of 15.00cm from its rest postion. The coefficient of kinetic friction between the block and the horizontal surface is 0.160.a) What is the work done by the spring in bringing the block to rest?
b) How much mechanical energy is being dissipated by the force of friction while the block is being brought to rest by the spring?
c) What is the speed of the block when it hits the spring?
An object is initially placed on the optical axis 21.2 cm to the left of a convex lens that has a focal length of 13.7 cm. what is the new image distance
Photorefractive keratectomy (PRK) is a laser-based surgery process that corrects near- and farsightedness by removing part of the lens of the eye to change its curvature and hence focal length. What is the energy of a single photon
A long straight wire carries a current of 6.2 A. The wire is horizontal in the plane of the page (screen) and the current is traveling to the left. Calculate the force that acts on the electron
a 0.50 uF capacitor is charged to a 12V battery. How much electrical potential energy is stored in the capacitor
A 0.45kg piece of putty is dropped from a height of 2.5m above a flat surface. find the magnitude of the average force exerted on the putty
Two charges repel each other with a force of 0.1 N when they are 5 cm apart. Find the forces between the same charges
Two children, Mary and Kate, are riding on a merry-go-round. Mary is at a greater distance from the axis of rotation than Kate. Which child has the larger angular speed? Tangential speed? Centripetal acceleration?
The motor in a refrigerator has a power of 156 W. If the freezing compartment is at 268 K and the outside air is at 302 K, what is the maximum amount of energy
Two physicists (on oppisite sides of a cage) are pulling on ropes tied to a lion. What are the force T2 and angle theta 2 of the rope pulled by the physicist 2
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. how high above the ground was the acorn before it fell
A 9 turn coil 1.80 in diameter is rotated at 11 about an axis perpendicular to a uniform magnetic field. A voltmeter connected to the coil through rotating contacts reads a peak value of 340.
A box is pushed across the floor, slide with a constant velocity, and is opposed by a friction force of 25N. What is the magnitude of the force? Choose the correct answer. A.Less than 25N B.Zero C.Greater than 25N D.25n
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