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A piece of ice of mass 0.0240 kg at an initial temperature of-11.0o C is placed in a well-insulated cup containing0.100 kg of water at 35.0o C. Calculate the equilibrium temperature of this system.
A weather emergency siren is mounted on a tower, 117 meters above the ground. On one hand, you would like to make the siren very loud so that it will warn as many people as possible.
q1. vector is along a measured trail and is 1310 m in a direction 27.0 deg north of east. vector is not along a
An energy-efficient lightbulb, taking in 23.0 W of power, can produce the same level of brightness as a conventional bulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10,000 h and its purchase price is $17.00, whereas the..
Suppose the mirror is misaligned, so that the actual angle between the normal to the surface and due south is too large by 0.003°. By how many meters (due east) will the reflected ray miss the detector
A 9180 kg ancient treasure chest lies at the bottom of the sea. Its volume is 0.839 m3. How much force is needed to lift the chest
Ted is sitting in his lawn chair when Stella flies directly overhead, going southeast at 100 m/s. find the coordinates of the explosion in Stella's reference frame
The flywheel of an engine has a moment of inertia 2.20 {rm kg} cdot {rm m}^{2} about its rotation axis. What is its final kinetic energy.
From a cliff 9.5 above a river, a young women of mass m = 45kg, jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wave length
A bat at rest sends out ultrasonic sound waves at 50,000 Hz and receives them returned from an object moving directly away from it at 33.0 m/s. What is the received sound frequency
A penny is dropped from rest from the top of the Willis Tower in Chicago. Find the speed with which the penny strikes the ground
A 0.9 inch tall clock is 29 cm in front of a diverging lens which has a focal length of -30 cm, Determine the image distance and height
A 68 kg student balances a 1400 elephant kg on a hydraulic lift. When a second student joins the first, What is the second student's mass
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