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A 7.0 kilogram box slides a 14 meter distance on ice. If the coefficient of kinetic friction is 0.24, evaluate what is the work done by the friction force?
a speck of clay of mass m 0.01 kg strikes and stick to a wooden block of mass m 0.99 kg which rests on a frictionless
Three point charges, -5.85*10-9 C, -9.20*10-9 C, and +7.20*10-9 C, are fixed at different positionson a circle. The total electric potential at the center of thecircle is -2150 V. What is the radius of the circle?
A proton with a speed 1.5 x 10^5 m/s falls through a potential difference of 100 volts, gaining speed. What is the speed reached
Now, as both pipes vibrate at their fundamental frequencies, the beat frequency of 17 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 333 m/s.
Two trucks of equal mass collide at a 90 intersection. If the momentum of truck A is 9.50x10^4 kg km/h east and the momentum of B is 1.05x10^5 kg km/ north, what is the resulting momentum of the final mass
Light of wavelength 568.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 62.5 cm from the slit. What is the width of the slit
question the force but not the power required to tow a boat at constant velocity is proportional to the speed. if a
Speedboat A negotiates a curve whose radius is 150 m. Speedboat B negotiates a curve whose radius is 190 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
A tennis ball collides with an identical ball at rest. The collision occurs in such a way that one-fourth the initial kinetic energy is lost in deformation of the balls. The outgoing balls go away the impact point making equal angles θ with respect t..
A fortune teller's "crystal ball" (actually just glass) is 13 cm in diameter. An image of the ring appears on the opposite side of the crystal ball. How far is the image from the center of the ball
A heat pump has a coefficient of performance of 3.90, How much energy does it deliver into a home during 12 h of continuous operation
A uniform electric field of magnitude 445 N/C pointing in the positive x-direction acts on an electron, that is initially at rest. The electron has moved 3.10 cm.
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