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An ice chest is constructed of a 0.4 mm thick plain-carbon steel plate, a 1.9 cm thick layer of Styrofoam {k=0.033 W/(m-C)} and a 0.65 cm thick fiber glass liner. The cooler has inside dimensions of 25x40x100 cm. The outside of the chest is exposed to air at 25 C with h = 10 W/(m 2C). If the chest is completely full with ice, compute the time for the ice to completely melt. The heat of fusion for water is 330 kJ/kg.
A uniform disk with a mass of 0.767kg and radius 15.1cm is rotating on frictionless bearings with an angular speed of 22.4hz when jill drops a 0.174kg clod of clay on a point 8.78cm from the center of the disk, where it sticks. What is the new angula..
A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction among the ladder and the floor is the similar as that between the ladder and the wall.
If the torque required to loosen a nut that is holding a flat tire in place on a car has a magnitude of 40.0 N•m, determine what minimum force must be exerted by the mechanic
A 2.30-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.40sin(2?t), Find the resonance angular frequency of the system
A 25.0-g object moving to the right at 16.0 cm/s overtakes and collides elastically with a 9.0-g object moving in the same direction at 15.0 cm/s
What is the wavelength of the reflection minimum?
If the forces of the ground and the weight are the only forces exerted on this man. Determine the acceleration of the man
Carbon tetrachloride (n=1.46) is poured into a container made ofcrown glass (n=1.52). what is the angle of the corresponding refracted ray
a diver springs upward with an initial speed of 2.65 ms from a 3.0-m board.a find the velocity with which he strikes
The suspension system of your 1200 kg car has a natural oscillation frequency of 2:00 Hz without functioning shock absorbers. find At what speed are you driving
a race car moveson a circle of constant radius b. if the speed of the car varies with time t according to the equation
As soon as a traffic light turns green, an automobile speeds up from rest to 56.0 mi/h with fix acceleration 9.00 mi/h-s. Calculate for what time interval is the bicycle ahead of the car
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