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A uniform electric field exists in a region between two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 1.5 cm away, in a time 5.9 x 10-8 s. (a) What is the speed of the electron as it strikes the second plate? (b) What is the magnitude of the electric field?
A biology student rides her bike around a corner of radius 25 meter at a steady speed of 8.2 m/sec. If she is not skidding, what is the magnitude of the force of friction on her bike from the road
A particular freely falling object requires 1.95 s to travel the last 33.5 m before it hits the ground. From what height above the ground did it fall.
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. The rocket is fired toward an 6.95-m high wall, which is located 18.0 m away.
A student of weight 665 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from seat is 566 N.
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the turns ratio Ns/Np of the transformer
A long straight wire carries a current of 6.2 A. The wire is horizontal in the plane of the page (screen), Calculate the force that acts on the electron
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. What is the amplitude A of each wave
Two 75.0 W (120 V) lightbulbs are wired in series, then the combination is connected to a 230 V supply. How much power is dissipated by each bulb
Three capacitors are connected as follows: 3.74 F capacitor and 4.52 F are connected in series, What is the capacitance of the total combination
A uniform horizontal rod of mass (M) and length (l) rotates with angular velocity (omega) about a vertical axis through its center. Determine the angular momentum of the system about the axis
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows with a constant acceleration -5.90 m/s2 for 4.50 s, With what speed does the car then strike the tree
An object moves at 40 m/s in the +x direction. As it passes through the origin it gets a 3.5 m/s^2 acceleration in the -x direction. What is its velocity when it returns to the origin
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