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A parallel plate capacitor has a separation between its plates of 1.0 mm. There is a dielectric with a dielectric constant of 2.1 fi ling the gap. If the capacitor has a charge of 7:8 * 10^-6C and is storing 11 J of energy, what is the area of one of the capacitor plates?
A simple harmonic oscillator consists of a block of mass 4.kg attached to a spring of spring constant 153 N/m. When t = 2 s, the position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
In a baseball game, the catcher stops a 35 m/s pitch. How much net work is done on the baseball as it is caught? what average force did the mitt exert on the ball
How to find the magnetic field
What is he wavelength of a 22.75*10^9 Hz radar signal. What is the frequency of an X-ray with wavelength 0.12nm
A student drops two metallic objects into a 120-g steel container holding 150 g of water at 25°C. One object is a 230-g cube of copper that is initially at 85°C, What is the mass of the aluminum chunk
An organ pipe is open at both ends. It is producing sound at its fifth harmonic, What is the length of the pipe
Two wheels have the same mass and radius of 4.8 kg and 0.50 m, respectively. Find the net external torque that acts on each wheel
A sound wave has a frequency of 677 Hz in air and a wavelength of 0.50 m. What is the temperature of the air
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 10.00 radius of curvature. What is the car's speed at the bottom of dip? What is the car's speed at the bottom of the dip?
R-134a is flowing at 1kg/s and throttled from 850 kPa and 40 C to - 40 C. Heat is gained at a rate of 1 kJ/s from the surroundings at 25 C
A motorcycle has a constant speed of 28.4 m/s as it passes over the top of a hill whose radius of curvature is 159 m. Find the magnitude of the centripetal force
A plate carries a charge of -4 ?C, while a rod carries a charge of 2.50 ?C. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?
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