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For the cellar of a new house, a hole is dug in theground, with vertical sides going down 2.40m. A concrete foundationwall is built all the way across the 9.60m width of the excavation.The foundation wall is 0.183 m away from the front of the cellarhole. During a rainstorm, drainage from the street fills up thespace in front of the concrete wall, but no the cellar behind thewall. The water does not soak into the clay soil. Find the forcethe water exerts on the foundation wall. For comparison, the weightof the water is 2.40m x 9.60m x 0.183m x 1,000 kg/m3 x9.80m/s2 = 41.3kN.
A 1.9 kg mass, m2, on a theta = 33.6o incline is connected to a 5.4 kg mass, m1, on a horizontal surface. find the magnitude of the tension in the connecting cord
An ice cube is placed in a microwave oven. Suppose the ovendelivers 97 W of power to the ice cubeand that it takes 32170 J to melt it. How long does it take for the ice cube to melt
Unpoloarized light is passed through a set of n polarizers. The first polarizer is arranged with the polarizing slits aligned vertically, and the last polarizer of the set is arranged so its slits are aligned horizontally. Each polarizer in betwee..
The space shuttle is in a 150km -high circular orbit. It needs to reach a 590km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
question what should be the index of refraction of a transparent sphere in order for paraxial rays from an infinitely
a horizontal wire of length 0.58 m carrying a current of 2.5 a is placed in a uniform external magnetic field. when the
Can the atoms in a liquid helium at 4K (interatomic distance about 0.1 nanometer) be adequately represented by nonspreading wave packets, so that their motion can be described classically.
On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's.
a coin is located 22.0 cm to the left of a converging lens f 16.0 cm. a second identical lens is placed to the right of
Three identical masses of 360kg each are placed on the x axis. One mass is at = -110cm , one is at the origin, find the magnitude of the net gravitational force on the mass
A car races at a constant speed of 25 m/s around a circular track with a radius of 150 meters. what is the displacement between the starting and ending points
One of the problems of in-air testing of nuclear weapons (or, even worse, the use of such weapons!) is the danger of radioactive fallout. What percent of the original level of is left after 56 years
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