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A magnet of mass 0.10 kg is dropped from rest and falls vertically through a 30.0 cm copper tube. Eddy currents are induced, causing the copper to warm up. The speed of the magnet as it emerges from the tube is 1.00 m/s. How much heat energy is dissipated to the environment?
A 48.9 g ball of copper has a net charge of 3.0 µC. What fraction of the copper's electrons have been removed
The Sun's corona sends high energy protons and electrons towards the Earth (the Solar Wind). A typical solar wind proton has an energy of K=6.0 KeV (thousand electron volts). An eV (electron volt) is the kinetic energy an electron gains when it mo..
A heat engine operating at maximum efficiency has an efficiency of 25 percent. The temperature of the cold reservoir is 300 K. Evaluate what is the hot reservoir
The distance to the nearest large spiral galaxy called Andromeda is 2.4 x 1022 m. How long does it take light to travel from us to Andromeda?
In high school physics, W=mg shows that 1 slug weighs 32.174 pounds. Yet 1 slug 1 pound s2/A. Similarly, 1 kg weighs 9.8 N. What does 1 kg equal?
Most applied research begins by selecting an everyday problem, interest, or concern for further study. Selecting an interest for study needs great care and forethought. As the opening quote says: "Hoe in haste, harvest in tears." Selecting a suita..
a 15kg child stroller is moving towards you with a speed of 2.5m/s. how much work is required to stop the stroller
A spring gun projects a golf ball at an angle of 45 degreesabove the horizontal. The ball has a horizontal range of 32feet. What is the maximum height to which the ball rises
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.5 mm. What is the resistance ratio RA/RB, measured between their ends
A long vertical wire carries an unknown current. Coaxial with the wire is a long, thin, cylindrical conducting surface that carries a current of 30 mA upward. The cylindrical surface has a radius of 3.0 mm. If the magnitude of the magnetic field at a..
Compute the x-coordinate of the center of mass XCM. Suppose that the mass of the rod is small enough to be ignored in your calculation. Your answers must be accurate to within 0.1 cm.
The Venturi tube shown in the figure below may be used as a fluid flowmeter. Find the fluid flow rate in cubic meters per second
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