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A boy rolls a ball on a level floor 3.5 meter to another boy. If the ball makes 15.0 revolutions, evaluate what is its diameter?
A charge of 3.45 µC is uniformly distributed on a ring of radius 9.5 cm. Find the electric field strength on the axis at the following locations. (a) 1.2 cm from the center of the ring N/C (b) 3.1 cm from the center of the ring N/C (c) 4.0 m from ..
A skateboarder shoots off a ramp with a velocity of 7.4 m/s,directed at an angle of 55° above the horizontal. The end ofthe ramp is 1.4 m above the ground. Let the x axis beparallel to the ground, the +y direction be verticallyupward, and take as ..
The string in a yo-yo is wound around an axle of radius 0.547 cm. The yo-yo has both rotational and translational motion, like a rolling object, and has mass 0.344 kg and outer radius 1.99 cm. Starting from rest, it rotates and falls a distance of 1...
An oscillating LC circuit consisting of a 3.0 nF capacitor anda 3.6 mH coil has a maximum voltage of 4.7 V. What is the maximum charge on the capacitor
approximately 10 6 kg of water drops 50m over niagara falls every second. how much potential energy is lost every
A square coil, enclosing an area with sides 2.7 cm long, is wrapped with 2,461 turns of wire. What average voltage is induced in the coil
An object has an equation of motion given by x = -2t^2 + 2t - 5. What is the displacement of the particle from t = 1s to t = 3s? What is the average velocity over that time range
in a region where there is an electric field the electric forces do 7.85x 10-19 j of work on an electron as it moves
If the coefficient of kinetic friction between a 35.0 kg crate and the floor is 0.25, what horizontal force is required to move the crate at a steady speed across the floor
A 20-mC charge is 4 cm above an unknown charge q. The electric intensity at a point 1 cm above the 20-mC charge is 2.20x109 N/C and is directed upward. What are the magnitude and sign of the unknown charge?
the speed of sound in an alcohol at a temperature of 20 c is 1260 ms. the density of the alcohol at that temperature is
Suppose a monochromic light strikes a grating at normal incidence. what is the frequency of the light that passes through
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