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Consider a charged metallic spherical shell of radius a=1.75 cm.The potential at a distance of r=6.0 cm from the center of theshell is measured to be 1.5kV. What is the charge on theshell? Calculate the potential on the surface of theshell.
The crankshaft in a race car goes from rest to 3300{\rm rpm} in 2.7{\rm s}. What is the crankshaft's angular acceleration
a birthday cake candle 4 cm high is 10 cm from a converging lens whose focal length is 15 cm. use a ray diagram on a
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm.Then the ball is pulled down another 4.0 cm and released. a) What is the spring constant? b) What is the period of the oscillation?
Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 2.10 e 10^6 m/s. What is the distance of closest approach? Please show work in the answer because I am attempting to learn this.
Two charges are brought together until they are 90.0cm apart, causing the electric force between them to increase by a factor of exactly 6. What was their initial separation distance
The speed of light in a material is 0.52×c. What is the critical angle (in degrees) of a light ray at the interface between the material and a vacuum
Recall from Section 14.3 that the average kinetic energy of an atom in a monatomic ideal gas is given by KE=(3/2)kT, Determine the de Broglie wavelength of a helium atom
Fairgoers ride a Ferris wheel with a radius of 5.00 m, the bottom of which is 1.75 m above the ground. The wheel completes one revolution every 36.0 s. What is the average speed of a rider on this Ferris wheel
What will be the lowest possible temperature to which very dry air at T=40 C can be cooled by evaporation. Consider p=1000mb and lv constant and equal to 2.4 x 106 J kg-1.
A 10 gauge copper wire carries a current of 24 A. Assuming one free electron per copper atom, calculate the magnitude of the drift velocity of the electrons
A current I flows down a wire of radius a. If it is uniformly distributed over the surface, what is the surface current density K
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. Find the force acting on the board by the tailgate
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