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A closed box is filled with dry ice at a temperature of -94.2 oC, while the outside temperature is 21.0 oC. The box is cubical, measuring 0.337 m on a side, and the thickness of the walls is 4.11 × 10-2 m. In one day, 3.96 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made?
A truck covers 40.01 m in 7.615 s while smoothly slowing down to final speed 1.40 m/s. What is the original speed and what is the acceleration.
A 350 kg piano slides 3.90 m down a 23 degree incline slope, and is kept from accelerating by a man who is pushing back on it parallel to incline. What is the force completed by the man.
A 0.180kg block of ice is placed against a horizontal, compressed spring mounted on a horizontal tabletop that is 1.40m above the floor. what is the speed of the block of ice when it reaches the floor
A golfer hits a golf ball, giving the ball an initial speed of 41.5 m/s, at an angle of 35.0 degrees to the horizontal. At what horizontal distance from the golfer, does the ball land?
A spring Oscillator is desgined with a mass of .568 kg. It opperates while immersed in a damping fluid,Find the required damping constant for the system
An 9.0 m, 240 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.60, and the ladder makes a 50.0° angle with the ground. How far up the ladder can an 880 N person climb before the l..
how long does it take the engine to lift the crate a vertical distance of 19.8 m? Friction in the system is negligible.
The water level in a vertical glass tube 1.300 m long can be adjusted to any position in the tube. What is the greatest depth of water for which there will be resonance in the air in the tube
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
What is the frequency heard by a person driving 62.41 km/h toward a blowing factory whistle (f = 425.84 Hz) is the air temperature is 20.03 oC
As you sit facing your computer screen, electrons are directed from a source at the back of the computer toward you and are deflected by a magnetic field. Which direction must the magnetic field be oriented in order to direct the electrons to the ..
Two converging lenses having focal lengths of f1 = 11.1 cm and f2 = 20.0 cm are placed d = 50.0 cm apart, The final image is to be located between the lenses, at the position x = 28.3 cm.
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