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To compare the relative efficiency of glass and air as insulators, repeat the previous problem with a 0.35-centimeter-thick layer of air instead of glass. Find by what factor is the rate of heat transfer reduced?
An Shot putter throw the shot from a height of 2m over the ground with the speed of 15m/s in the direction 36,9° upwards. What is the speed of the shot when it lands
Four identical springs with k = 65.3kN/m support a car, Find the maximum weight for the car if the springs should be compressed no more than 3.9cm when the car is at rest
A charge of 2.19 µC is held fixed at the origin. A second charge of 2.19 µC is released from rest at the position (1.15 m, 0.470 m) . If the mass of the second charge is 2.10 g, what is its speed when it moves infinitely far from the origin?
Indiana Jones is pushing back a 285 kg box which slides 4.3 m down a 29° incline and kept from accelerating. Calculate the force exerted by jones
A bucket of mass 1.00 kg is whirled in avertical circle of radius 1.40 m. At thelowest point of its motion the tension in the rope supporting the bucket is 25.0 N. Find the speed of the bucket
A U-shaped pipe contains water and oil - water filling one arm of the U and oil filling the other. determine the density of the oil
Estimate the rms electric field in the sunlight that hitsMars, knowing that the Earth receives about 1350 W/m2 and that Mars is 1.52 times farther from the Sun (on average) th anis the Earth.
The third-order fringe of 610nm light is observed at an angleof 18 degrees when the light falls on two narrow slits. How far apart are the slits
A rock is dropped in a large tank of benzene (n=1.5) and sinks to the bottom of the tank. what is the actual depth of the rock
a classic 1957 chevrolet corvette of mass 1240 kg starts from rest and speeds up with a constant tangential
Monochromatic light falls on a slit that is 3.50 multiplied by 10-3 mm wide. what is the frequency of the light used
Assume that light of wavelength 550 nm is being observed. Also suppose that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the greatest distance that these stars might be from the earth.
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