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Problem: A cargo plane unloads crates of supplies at the site of humanitarian disaster. The crates slide down a 48 foot long ramp that starts at the cargo plane door 17 feet above the ground. If the ramp has a coefficient of kinetic friction of 0.12,
Part A: How long does it take each create to slide down the ramp?
I need help to find how long does it take each create to slide down the ramp.
A 60.0-kg skater begins a spin with an angular speed of 6.0 rad/s. By changing the position of her arms, the skater decreases her moment of inertia by 50%. Find the skater's final angular speed?
the current in a coil with a self-inductance of 1 mh is 3.0 a at t 0 when the coil is shorted through a resistor. the
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 9 A, and that of the vacuum cleaner is 5.5 A. Determine the power consumed by the vacuum cleaner.
If 0.45kg of water at 100 degrees Celsius is changed by a reversible process to steam at 100 degrees Celsius, decide the change in entropy of (a) the water, (b) the surroundings, and (c) the universe as a whole. (d) How would you answers differ if th..
A particle is located at the vector position rarrowbold = (9.00i hat bold + 10.00j hat bold) m and a force exerted on it is given by Farrowbold = (8.00i hat bold + 7.00j hat bold) N
a typical co2 laser produces infrared radiation in the range of 9000-11000 nm wavelength in pulses of 5 j and 500 ns
As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and the cloud to be the other plate, What is the capacitance of the system
The angular momentum of a flywheel having a rotational inertia of 0.242 kg·m2 about its central axis decreases from 9.30 to 0.230 kg·m2/s in 4.40 s. What is the magnitude of the average torque acting on the flywheel about its central axis during th..
A curve in a highway has radius of curvature 120 m and is banked at 2.8°. what is the safest speed to go around the curve
The speed of sound in air at 20 C is 344m/s. How many milliseconds does each vibration take
A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 1.3 s later. How deep is the ocean at this point? Suppose the speed of sound in seawater is 1560 m/s and d..
Consider a gas of hydrogen atoms...At what temperature will an equal number of atoms have electrons in the ground (n=1) state and in the second (n=3) excited state?
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