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A piece of steel piano wire is 1.60 m long and has a diameter of 0.26 cm. What is the magnitude of the tension required to break it? The strength of steel is 5.0 x 108 N/m2.
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Question: A simple pendulum consisting of a mass m attached to a massless string of length L is performing harmonic oscillations for small angles. Determine the period T in terms of L and the gravitational acceleration c ...
Question: An old-fashioned LP record rotates at 33 1/3 rpm (revolutions per minute) and is 12 inches in diameter. A "single" rotates at 45 rpm and is 7.0 inches in diameter. If a fly sits on the edge of an LP and then on ...
Question: A standard biological microscope is required to have a magnification of 200Ã-. When paired with a 10Ã- eyepiece, what power objective is needed to get this magnification? Part A: Assume that the length of the t ...
After examining a cube-shaped object, explain, based on your observations, why Earth is not shaped like a cube? Describe 4 reasons with evidence to support each one.
Question: Which statements about potential energy are correct? Select all that apply. a) The potential energy of a pair of interacting charged objects increases as the distance between them increases. b) Potential energy ...
Question: A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 88m above the glacier at a speed of 150m/s. How far short of the target should it drop the package ...
Question: In this problem you will derive two different formulas for the power delivered to a resistor. What is the power P supplied to a resistor whose resistance is R when it is known that it has a voltage V across it? ...
Question: One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. Each lab group is challenged to determine the heaviest rock that can be placed in the bo ...
Question: A solenoidal coil with 25 turns of wire is wound tightly around another coil with 320 turns. The inner solenoid is 23.0cm long and has a diameter of 2.00cm . At a certain time, the current in the inner solenoid ...
Question: A rifle with a barrel length of 59cm fires a 8g bullet with a horizontal speed of 430m/s . The bullet strikes a block of wood and penetrates to a depth of 15cm. A) What resistive force (assumed to be constant) ...
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