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In the cable television show Ice Road Truckers, people often have to drive large trucks over frozen lakes. To prevent trucks from crashing through the ice, the ice needs to be at least 5.57 feet thick. Currently the ice is 4.76 feet thick, which is below the safe level. Today the temperature is well above freezing, but they are expecting a cold spell that could freeze the ice to safe levels. As the owner of a trucking company, you want your trucks to use the ice road as soon as possible. If the average temperature during the cold spell is 16.23°F and the water temperature is 32.0°F, how many hours will it take for the frozen lake to be safely passable? The latent heat of fusion of water is 3.33 × 105 J/kg and the thermal conductivity of ice is 2.180 W/m·K. The density of water near freezing is 1000.0 kg/m3 and the density of ice is 917.00 kg/m3.
For an equilateral prism, the angle of incidence of 49 degree at boundary 1, Calculate the angle of refraction at boundary 2
The power rating of a resistor is the maximum power it can safely dissipate without being damaged by overheating. what is the maximum current it can carry without damage
A roller coaster car rolls down a frictionless track, reaching speed v_0 at the bottom. by what factor must you increase the height of the track
a charge of 5.85 microc resides at the origin. a what is the flux through any gaussian surface enclosing this charge? b
find the x and y components of the shell.
What are (a) the lowest frequency, (b) the second lowest frequency, and (c) the third lowest frequency for standing waves on a wire that is 7.65 m long, has a mass of 131 g, and is stretched under a tension of 448 N?
if the faucet has a constricted opening then the water may speed up there. but when it enters the hose which is larger
An experimental bicycle wheel is placed on a test stand so that it is free to turn on its axle. If a constant net torque of 6.00 N · m is applied to the tire for 5.00 s, the angular speed of the tire increases from 0 to 100 rev/min. The external t..
While Voyager 2 sent back pictures of Neptune during its historic flyby of that planet in 1989, the spacecraft's radio signals travelled for 4 hours at the speed of light to reach Earth. How far away was the spacecraft.
Harold the Hurler is a physics student who is renowned for his baseball pitching arm. In order to determine the amount of work he performs in throwing a baseball, Harold devises an experiment.
questiona particle of mass m in energy state n is confined in an infinite square well potential of width a. a
An electric fan is turned off, and its angular velocity decreases uniformly from 540 rev/min to 240rev/min in a time interval of length 3.65s, Find the number of revolutions made by the motor
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