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When a certain spring is stretched, the restoring force satisfies the equation F=-kx+βx^3. If k=10.4 N/m and β=101 N/m^3, evaluate the work done by this force when the spring is stretched 0.111 meter.
A mad scientist is designing a trap for intruders that will liftthem up into the air and hold them helpless. The device consists ofan equilateral triangle, 10.0 meters to a side, embedded in his floor.
Two hockey players of equal mass are sliding across the ice rink in a straight line directly toward each other. What is the final velocity of player 2
A circular wire loop of radius 14.9 cm carries a current of 3.04 A. It is placed so that the normal to its plane makes an angle of 50.9° with a uniform magnetic field of magnitude 15.0 T. What is the magnitude of the torque acting on the loop?
A photon of wavelength 0.72462 nm strikes a free electron that is at first at rest. The photon is scattered straight backward. What is the speed of the recoil electron after the collision?
Sketch the shear force and bending moment diagram and Verify that the support reactions are correct.
A 0.20 kilogram ball is thrown straight up into the air with an initial speed of 18 m/s. Compute the momentum of the ball at its maximum height
josh starts throwing his pitch we assume that his arm moves in a perfect circular arc and his arm is 0.7 m long. if he
High-speed stroboscopic photographs show that the head of a 280-g golf club is travelling at 58 m/s just before it strikes a 46-g golf ball at rest on a tee. After the impact, the club head travels (in the similar direction) at 52-m/s. determine t..
A converging lens has a focal length of 71.00 cm. A 12.0-cm-tall object is located 131.0 cm in front of this lens. Is the image real or virtual
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
A roller coaster travels at 98.9ft at an angle of 42.9 above the horizontal. How far does it move horizontally
an electric field of 210000 nc points due west at a certain spot. what is the magnitude of the force that acts on a
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