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Capacitor A and capacitor B both have the same voltage across their plates. However, the energy of capacitor A can melt mkilograms of ice at 0 °C, while the energy of capacitor B can boil away the same amount of water at 100 °C. The capacitance of capacitor A is 9.0 oF. What is the capacitance of capacitor B?
Please note that for water, the latent heat of fusion is Lf = 33.5 x 104 J/kg, and the latent heat of vaporization is Lv = 22.6 x 105 J/kg
An infinitely long line of charge has linear charge density 4.00 10-12 C/m. A proton (mass 1.67 10-27 kg, charge +1.60 10-19 C) is 17.0 cm from the line and moving straight toward the line at 3000m/s.
A skycam captured a video from directly overhead of an ice skater performing a spin. When viewed from above she was spinning counter-clockwise. If you watched this video, what direction would her angular velocity vector be pointing? (according the th..
A college student is working on her physics homework in her dorm room. Her room contains a total of 6*10^26 gas molecules. As she works, her body is converting chemical energy into thermal energy at a rate of 125 W.
If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.
A 238/92U nucleus is moving in the x direction at 5.0 * 10^5 m/s when it decays into an alpha particle 4/2He and a 234/90Th. Write an expression for the conservation of momentun in the x direction
Two point charges are on the y-axis, one of magnitude 3.0 ? 10-9 C at the origin and a second of magnitude 6.0 ? 10-9 C at the point y = 25 cm
Three moles of nitrogen gas,N2, at 31.0°C arecontained in a 19.5 L cylinder. Find the pressure the gas exerts on the cylinder walls
A 0.95 kg air-track glider is attached to each end of the track by two coil springs. It takes a horizontal force of 0.500 N to displace the glider to a new equilibrium position, x= 0.130 m.
In the picture below, a 10 kg bar 1.2 m long is set up to rotate about its center (the dark circle). Determine the net torque on the bar
A 51.0 kg woman balances on one heel of a pair of high-heeled shoes. If the heel is circular and has a radius of 0.400 cm, what pressure does she exert on the floor
Adisa pulls a 40-N crate up a 5.0-m long inclined plane at a constant velocity. If the plane is inclined at an angle of 37° to the horizontal and there is a constant force of friction of 10 N between the crate and the surface, what is the net change ..
Cars have shock absorbers to damp the oscillations that would otherwise occur when the springs that attach the wheels to the car's frame are compressed or stretched. What will the period of the underdamped oscillation of this car be if the pushing-..
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