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Two packing crates of masses m1 = 10.0 kg and m2 = 5.00 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.26. The 5.50 kg crate lies on a smooth incline of angle 40.0°. Find the acceleration of the 5.50 kg crate.
Imagine a "free" electron and a "free" proton held midway between the plates of a charged equivalent plate capacitor. When released, how do their accelerations and directions travel compare.
A wave on a Slinky has a frequency of 1.69 Hz. It takes 4.1 s to travel the length of the Slinky (0.29 m). What is the wavelength.
How many days does it take for a perfect blackbody cube (0.0206 m on a side, 66.9 °C) to radiate the same amount of energy that a one-hundred-watt light bulb uses in one hour?
A small piece of Styrofoam packing material is dropped from a height of 1.50 m above the ground. Until it reaches terminal speed, magnitude of its acceleration is given by a = g - bv. After falling 0.40 m, the styrofoam effectively reaches its ter..
A neutral conductor completely encloses a hole inside of it. you observe that the outer surface of this conductor carries a charge of -12 microC. A) can you conclude that there is a charge inside the hole? b) how much charge is on the inner surfac..
A series of small machine components being moved by a conveyor belt passes over a 140-mm-radius idler pulley. At the instant shown, the angular velocity of the idler pulley is 5 rad/s clockwise. If the total acceleration of point B is 2400 mm/s2, wha..
suppose that a projectile which is subject to a linear resistive force is thrown down with a speed of Vyo which is greater than the terminal speed Vterm. Describe and explain how the velocity varies with time, and make a plot of Vy against t for t..
What is constant speed V
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and kno..
A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..
What is the least coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road.
Three equal point charges, each with charge 1.10 , are placed at the vertices of an equilateral triangle whose sides are of length 0.200. Calcualte the electric potential energy of the system?
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