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A parallel-plate capacitor has an area of 5.50 cm2, and the plates are separated by 1.06 mm with air between them. It stores a charge of 314 pC. What is the potential difference across the plates of the capacitor?
The wings of some beetles have closely spaced parallel lines of melanin, causing the wing to act as a reflection grating. what is the first-order diffraction angle for green light
Astronomers have observed a planet orbiting a near-by star. Through close observation, What is the velocity at apogee, in km/s, for the planet
Explain the physical reason for this observed behavior
A11-g coin slides upward on a surface that is inclined at an angle of13°above the horizontal. Find the magnitude and direction of the force of friction
Heavy rains have flooded your professor's basement to a depth of 6 cm. This basement is 12 m by 10 m in area. You have a hose of diameter 1.7 cm and can run the hose from the water in the basement
A child sits still on a swing that is supported by two chains. Each chain makes a 15.0° angle with the vertical. The child's mass is 25.0 kg. What is the tension in each chain? (Ignore the mass of the seat and chains.)
in 1960, mrs maxwell rogers of tampa florida, reportedly raised one end of a car that had fallen onto her son when a jack failed. If her panic lift effectively raised 4000 N (about a quarter of the car's weight) by 5 cm, how much work did her forc..
A 12 V battery is connected by a switch (not shown) in series to an inductor (inductance 400 mH) and a resistor (resistance 250 ohms). what is the rate of change of current
A 5kg block initially at rest is pulled to the ight along a horizontal surface by a constant, force of 30N acting at 53 degrees above the horizontal. Find the net work done on the block
A cube of iron, of side length 14cm, is heated from 10?C to 90?C; Calculate the total work done ON the cube and the change in internal energy of the cube
Incident light of wavelength 400nm elite electrons having a maximum kinetic energy of 1.0ev from a material. a) what is the work function of the material in ev ? b) over what wavelength range of incident light will electrons be emitted from the mater..
A solid metal ball of radius 1.6 cm is located near a hollow plastic ball of radius 2.1 cm, What is the electric field at the center of the metal ball due just to the charges on its surface
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