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Imagine you take a parallel-plate capacitor and double the charge on each plate. What happens to the "capacitance"?
You and a close friend stand facing each other. You are as close as you can get without actually touching. If a wire is attached to each of you, you can act as a capacitor. Estimate (order of magnitude is sufficient) the capacitance of this "human capacitor".
A u-tube with constant cross section is partly filled with water. Engine oil of density 0.8g/cm3 is poured into the right arm (without mixing) until the water level rises 2.0cm. The length of the oil column is then.
An RLC circuit consists of a 48 ohm resistor, 240 micro farad capacitor, and an inductor. What is the inductance
A 1020kg artillery shell is fired from a battleship. While it is in the barrel of the gun, it experiences an acceleration of 2.1x10^4m/s^2. what net force is exterted on the artillery shell before it leaves the barrel of the gun
Cells maintain a high concentration of macromolecules inside them. How do you expect this to affect the osmotic pressure inside the cell? What mechanisms does the cell use to counterbalance osmotic pressure? What are "depletion forces" and why are..
The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg. The density of water is 1.00 g/cm3.
A boy tosses a ball in the vertical direction off the side of a cliff. if the initial velcoity of the ball is 15 m/s upward, determine the maximum height sb reached by the ball
A scientific supply catalog advertises a material having the index of refraction of 0.85. Is that a better product to buy? Why or why not.
What is its angular displacement in this time.
An ideal monatomic gas initially has temperature Ti and pressure pi. It is to expand from volume Vi to volume Vf. If the expansion is isothermal, what are the final pressure and the work done by the gas
The other end of the spring braced against a post that was firmly anchored to the ship's frame. What was the speed of the cannon ball if the spring compressed 50cm as the cannon was fired.
A 17 kg girl slides down a playground slide that is 3.1 m high. When she reaches the bottom of the slide, her speed is 1.3 m/s. what is the coefficient of friction between the girl and the slide
A piece of glass has a thin film of gasoline floating on it. A beam of light is shining perpendicular on the film. what is the minimum nonzero thickness of the film
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