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A sign hangs from a beam supported by a rope attached to a wall. The beam is 4 meterslong. The sign weight 1 kg.
a. Find the tension in the rope.
In compressing the spring in a toy dart gun, 0.4 J of work is done. What is the dart's kinetic energy as it leaves the gun
Consider an incompressible fluid inside a closed verticalcylinder. The applied pressure at top of the fluid is 2.02 x10 to the fifth N/m squared, Calculate the pressure at the bottom of the cylinder
A fire hose ejects a stream of water at an angle of 35.8 ° above the horizontal. how far from a building should the fire hose be located to hit the highest possible fire
Determine the initial rate of heat transfer from a hot pack to a patient due to thermal conduction (through the toweling) when the hot pack is applied
The emissivity of tungsten is 0.350. A tungsten sphere with a radius of 1.19 is suspended within a large evacuated enclosure whose walls are at a temperature of 285.0 . What power input is needed to maintain the sphere at a temperature of 2500.0 i..
An Olympic skier moving at 20.0 m/s down a 30.0o slope encounters a region of wet snow, of coefficient of friction μk=0.740. Find how far down the slope does she go before stopping
A container is filled to a depth of 19.0 cm with water. On top of the water floats a 32.0-cm-thick layer of oil with specific gravity0.600
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, is dropped from same point at t = 190 ms. (a) How far below the release point is the center of mass of two stones at t = 390 ms? (Neither stone has yet reached the gr..
the air above water is cooled as a result of the water absorbing heat from the air. the density of air is 1.29 kgm3 and
What is the minimum number of 65-Ω resistors that must be connected in a parallel in order to produce an equivalen tresistance of 11-Ω or less?
If a toaster is plugged into a source of alternating voltage with an rms value of 66.2 V, find the resistance of the toaster's heating element
Nichrome is a nickel chromium allot commonly used in heating elements. suppose you have a coil of nichrome wire that is 25.0 m long, what is the resistance of the Nichrome wire
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