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A 12-kg block initially slides at 18 m/s on a flat rough surface and eventually stops. If the block cools to the ambient temperature, which is 30 °C, what is the entropy change of the system?
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery.
A vessel which contains an ice-water mixture at 0C is in thermal contact with a water-steam mixture at 100 C. how many grams of ice melts
A 75-m long train begins unknown uniform acceleration from rest.The front of the train has a speed of 23 m/s when it passes arailway worker who is standing 180m from where the front of the train started. What will the speed of the last car be as i..
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 15.0 m/s due north relative to the water. Illustrate what is the velocity of the boat relative to shore?
A man drags a 72.0 kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. The crate is tilted 26 degrees above the horizontal, and the strap is inclined 68 degrees above the horizontal. The center ..
In Young's double slit experiment, 422 nm light gives a third-order bright fringe at a certain location on a flat screen. What is the longest wavelength of visible light
The height of an empty can is H, and the mass M. The mass of a full can is m, What is the center of mass of the can as a function of x? h is the height from the bottom to the surface
The top plate is illuminated by monochromatic light of wavelength 544.1 nm. Determine number of dark parallel bands crossing the top plate (including the dark band at zero thickness along the edge of contact between the two plates).
The entrepreneur who founded the company is convinced that sales will increase next year by 150% and that net operating income will increase by 400%, with no increase in average operating assets. Illustrate what would be the company's ROI?
The output voltage of an AC generator is given by ?v = (120 V) sin (50?t). The generator is connected across a 25.0-? resistor. Find the power delivered to the resistor
The 87?F capacitor in a defibrillator unit supplies an average of 6500 W of power, To what voltage is the capacitor charged
In the diagram below, a student compresses the spring in a pop-up toy 0.020 meter. how much energy, in Joules, is being stored in the spring
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