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Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explain why charge density on the sharp and pointed ends of a conductor is higher than on its flatter portions.
the radii of curvature of the surfaces of a thin converging meniscus lens are r1 12.0 cm and r2 28.0 cm. the index
Two infinite, straight lines of charges run parallel to each other at a distance of 10cm. Find the electric force an electron would experience if placed at the middle point between the lines
A cylindrical bucket, open at the top, is 29.0cm high and 12.0cm in diameter. How High will the water in the bucket rise
Assume a car's brakes can produce an acceleration of -7 m/s2. If the car is travelling at an initial speed of 28.0m/s, what is the minimum distance necessary to stop car.
A circular loop of conducting wire, with radius a and resistance R, is placed in a magnetic field. Find an expression for the induced current in the loop as a function of time
A large tower clock like Big Ben, the Parliment Clock in London, has an hour hand 2.70 m long with a mass of 54.5 kg, Calculate the total rotational kinetic energy of the two hands
A 2.5kg cannonball is fired from the top of a cliff. The cannonball leaves the cannon at a height of h=75 m above the ground below. what is the speed of the cannonball just before it hits the ground
A Carnot engine uses a steam boiler at 100°C as the high-temperature reservoir. Determine the useful power output of the heat engine
An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum..
An oil droplet with 10.0 excess electrons is observed between two parallel electrodes spaced 12.0 mm apart. What is the radius of the droplet
In a crude model of a rotating diatomic molecule of chlorine (Cl2), the two Cl atoms are 2.00 multiplied by 10-10 m apart, What is the rotational kinetic energy of one molecule of Cl2
A pendulum clock keeps time by the swinging of an attached mass at the end of a massless string of length L, What is the angular position of the mass at t = 0.246s
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