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An Atwood machine is made with masses M1 = 100 g, M2 = 120 g, and pulley mass of 100 g. What is the percent error in acceleration (relative to the corrected formula) calculated by neglecting the pulley mass versus incorporating the pulley mass?
A crate of potatoes of mass 8.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.72 and μk = 0.43. Find the frictional force (magnitude and direction) on the crate if the crate is sliding up t..
When both cars increase their speed by 7.0m/s , they then have the same kinetic energy. What were the original speeds of the two cars
Two identical +9.5uC point charges are initially 3.5cm from each other. If they are released at the same instant from rest, hoe fast will each be moving when they are very far away from each other? suppose they have identical masse of 1mg.
A 68.4-kg bungee jumper is standing on a tall platform (h0 = 45.4 m). The bungee cord has an unstrained length of L0 = 8.73 m, Determine how far the bungee jumper is from the water when he reaches the lowest point in his fall
A power plant burns coal and generates an average of 600.0 MW of electrical power, Find the total electrical energy generated by the plant in a 30-day period
q1. an object weighs 302 n in the air. when tied to a string connected to a balance and immersed in water it weighs 220
Astronomers have recently discovered a new planet in a faraway solar system, with a radius of roughly 380 km. calculate the minimum density of the planet
he edge of the thimble of a micrometer moves a distance of 2.0 mm when it is given four complete revolutions. calculate the least count of the micrometer
Two tugboats pull a disabled supertanker. Each tug exerts a constant forace of 1.55*10^6n, What is the toal work they do on the supertanker
A whale uses sonar (sound waves) to supplement its eyesight for deep water dives. The whale sends out a sound wave, which returns in 0.5 seconds. How far away is the object it bounced off
A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. what must be the length of the aluminum rod so that the temperature at the junction is 50°C
A proton with kinetic energy of 2.30 × 106 eV is fired perpendicular to the face of a large plate that has a uniform charge density, From what distance should the proton be fired so that it stops right at the surface of the plate
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