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A person, with weight W = 584N and height 1.25m, is doing pushups on the ground. Their center of gravity is .84m from their feet. Find the Normal Force exerted by the floor on each hand and foot. (Assume he is in equilibrium. If that's the case, use torques to solve for forces. Just remember that the force pushing against the feet and arms will be halved for each hand and foot.)
The combination of an applied force and a friction force produces a constant total torque of 35.2 N · m on a wheel rotating about a fixed axis. The applied force acts for 6.10 s. During this time, the angular speed of the wheel increases from 0 to..
Two identical gliders on an air track are held together by a piece of string, compressing a spring between the gliders. What velocity does the other glider have
A current-carrying 2.0 cm long segment of wire is inside a long solenoid (radius=4.0cm, 800 turns/m, current = 50mA). what is the magnitude of the magnetic force on this segment
You are going to collect data to represent the variation of current as a function of the total resistance of the circuit. determine the new total resistance and the new current
Ice at -10.0 °C and steam at 118 °C are brought together at atmospheric pressure in a perfectly insulated container. find the ratio of the mass of steam to the mass of ice
The activation energy for vacancies in Cu is w.28 eV. Find the fractional number of vacancies at the melting temperature. Estimate the contribution of vacancies to the thermal expansion at the melting temperature.
A 1.80x10^2 kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.00 m above the ground. The crane that is doing the lifting produces a steady power of 4x10^2 W. How much time does it take to lift piano.
Death Stars are basically spherical. What is the acceleration due to gravity on the surface of the Death Star? Express your answer in m/s2
A parallel-plate capacitor is made from two aluminum-foil sheets, each 3.00 cm wide and 10.0 m long. What is the maximum charge that can be stored in this capacitor
A stone is shown at rest on ground. at. The vector shows the weight of the stone. Complete vector diagram showng another tha results in zero net force on the stone. b. What is the conventional name of the vector you have drawn.
Most firms and business in our economy operate under monopolistic competition, and product differentiation in this type of markets is one of the main factors.
A zoom lens has a focal length that varies from 30 to 200 mm. Which setting will make the subject look the largest Which setting will include the widest angle of field
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