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A non conducting thin spherical shell of radius 6.36 cm has a uniform surface charge density of 5.19 nC/m2. What is the total charge on the shell?
1. What is the magnitude of the electric field at a distance of 2.35 cm from the center of the shell?
2. What is the magnitude of the electric field at a distance of 7.45 cm from the center of the shell?
Unpolarized light incident through a polarizer passes through a second polarizer placed at an angle theta to the first. How much is theta
A 6.0-cm-diameter cylinder of nitrogen gas has a 4.0-cm-thickmovable copper piston. The cylinder is oriented vertically, asshown in the figure, and the air above the piston is evacuated
A long straight wire lying along the x-axis carries a constant 5 A current along the positive x direction. A small 5mm diameter loop lies in the x-y plane centered at y = 2m. If the loop is suddenly stretched so that its area shrinks to zero in 0...
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..
Amber (n = 1.546) is a transparent brown-yellow fossil resin. An insect, trapped and preserved within the amber, How far below the surface is the insect actually located
A 124 kilogram balloon carrying a 22 kilogram basket is descending with a constant downward velocity of 18.8 m/s. Determine how high was the balloon when the rock was thrown out
A goldfish bowl is spherical, 8 cm in radius. A goldfish is swimming 3.0 cm from the wall of the bowl. Where does the fish appear to be to an observer outside
A dart player throws a dart horizontally at a speed of 12.4 m/s. The dart hits the board 0.32 m below the height from which it was thrown. How far away is the player from the board?
A balloon is filled with 4.50 liters of helium at a pressure of 1.30 atm and a temperature of 25.0° C. Discover the mass of the helium. Find the acceleration of the balloon if the rubber has a mass of 4.00 g.
A trap door, of length and width 2.00 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
A top is a toy that is made to spin on its pointed end by pullingon a string wrapped around the body of the top. The string has alength of 56 cm and is wound around thetop at a spot where its radius is 1.2 cm.The thickness of the string is negligi..
The volume of a monatomic ideal gas increases by a factor of 4 in an adiabatic expansion. Calculate By what factor does its pressure change
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