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A tow truck is pulling a car out of a ditch by means of a steelcable (Y = 2.0 x 1011 N/m2) that is9.32 m long and has a radius of 0.396 cm. When the car just beginsto move, the tension in the cable is 898 N. How much has the cable stretched?
A 10 gram bullet is fired into a ballistic pendulum made froma 4 kg wood block and two light cords. The block’s vertical displacement is 5 cm. What is the initial velocity of the bullet ? What percentage of the bullet’s initial kinetic energyis lo..
the place you get your hair cut has two nearly parallel mirrors 7.0m apart. as you sit in the chair your head is 1.5m
An outfielder throws a baseball to his catcher in an attempt to throw out a runner at home plate. The ball bounces once before reaching the catcher.
Consider a system of 12 particles with two energy levels. Plot the number of microstates corresponding to each value of the total energy if (a) the particles are indistinguishable and (b) if the particles are distinguishable.
An electron is accelerated from rest through a potential difference of 3750 V. Calculate the radius of the path it will follow
A 20-cm-diameter circular cover is placed over a 10-cm-diameterhole that leads into an evacuated chamber. How much force is required to pull the cover off
A snowboarder is pulled by a tow rope along a horizontal surface with a constant force of 60 N. How far must the boarder be pulled, starting from rest, so that her final kinetic energy is 500 J.
question how does water pressure one meter below the surface of a small pond compare with water pressure one meter
Emilie's potter's wheel rotates with a constant 2.00rad/s2 angular acceleration. What was the angular velocity of the wheel at the beginning of the 3.60s interval
A drum rotates around its central axis at an angular velocity of 19.5 rad/s. If the drum then slows at a constant rate of 5.35 rad/s2, (a) how much time does it take and (b) through what angle does it rotate in coming to rest?
Planet A and Planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than Planet B. What is the ratio of their speeds
A small package is fired off Earth's surface with an unknown launchspeed at a 40.0^\circ angle with the localhorizontal. What is the speed of the package when it reaches its maximum height
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