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Calculate the force exerted on the earth by the atmosphere if atmospheric pressure is 14.7 lb/in^2 and the surface area of the planet is 5.1 x 10^8 kn^2
two metal rods are to be used to conduct heat from a region at 100 c to a region at 0 c. the rods can be placed in
The inner edge of a race track is in the form of a rectangle with two semicircular ends on the shorter sides. The rectangle is 82.0 m wide and 137.0 m long. The race track is 5.50 m wide.
A 42.0-kg boy, riding a 1.50-kg skateboard at a velocity of 5.50m/s across a level sidewalk, jumps forward to leap over a wall.Just after leaving contact with the board, the boy's velocityrelative to the sidewalk is 6.00 m/s, 8.30° above thehorizo..
a man with a mass of 80 kg sits on a chair of mass 10 kg.a find the weights of the man and the chair.b the chair exerts
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
two strings are vibrating at the same frequency of 150 hz. after the tension in one of the strings is decreased an
A metal cylinder of height h = 0.8m and cross-section S = 0.02m^2, is floating upright in water. The density of the metal cylinder is p metal = 550kg/m^3, and the density of water is p water = 1000 kg/m^3. Compute the length of the cylinder outside t..
For the 4-particle system find the moment of inertia about the y-axis, that passes through the two masses on the left-hand side of the system.
A parallel-plate capacitor with area 0.500m2 and plate separation of 4.00mm is connected to a 3.00 V battery. How much charge is stored on the plates
A model of a helicopter rotor has four blades, each of length 3.90 m from the central shaft to the blade tip, What is the linear speed of the blade tip
A 2.0-kg object is at rest at the top of an inclined plane that makes an angle of 30° with the horizontal and which has a rise of 0.40 m. How much work is done by the object in sliding down the inclined plane
15 mol of an ideal gas expands isothermally at 373 K to 12.5 its inital volume. Find the heat flow into the system
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