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Question: A sphere of mass 35kg is attached to one end of a rope. It is found that the rope does an amount W = 550J in pulling the sphere upwards through a distance of 1.5m. Find the tension in the rope.
In a television set, electrons are accelerated from rest through apotential difference of 15 kV. Theelectrons then pass through a 0.29 Tmagnetic field that deflects them to the appropriate spot on thescreen. Find the magnitude of the maximum magnetic..
A pendulum clock has a period of 0.658 s on Earth. It is taken to another planet and found to have a period of 0.820 s. Find the gravitational field strength on the other planet
Suppose the rotational kinetic energy of a solid disc is 1000 J when the disk has an angular velocity of 3 rad/s. What is the disk's moment of inertia
A 1800 kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest
a sphere with a 2.25 meter radius and a mass of 3.5 kilogram rolls down the inclined plane shown. at the bottom of the
A spaceship approaches Earth with a speed of 0.70c. What is his heartbeat rate according to an observer that is at rest relative to Earth
A convex mirror has a focal length of -20 cm. What is the position of the resulting image in cm if the image is upright and one-fourth the object size
A steam locomotive uses the back-and-forth motion of a drive rod to turn its 1.55 m diameter wheel. Each compete oscillation of the rod corresponds to one wheel revolution.What's the rod's oscillation frequency when the train is moving at 30 m/s ?
A motorist drives south at 22 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 30 m/s for 1.00 min. For this 6.40 min trip, find out the following values.
A proton (m=1.67x10-27 kg) is being accelerated along a straight line at 3.6*10^5 m/sec2 in a machine. If the proton has an initial speed of 2.4x10^7 m/sec.
The company's tax rate is 30% and its discount rate is 15%. Illustrate what is the net present value of the asset?
A boy scout starts a fire by using a lensfrom his eyeglasses to focus sunlight on kindling 5.6 cm from the lens. What is the magnification when the eye is relaxed
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