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If R = 12 cm, M = 370 g, and m = 40 g (below), find the speed of the block after it has descended 50 cm starting from rest. Solve the problem using energy conservation principles. Repeat with R = 5.0cm.
A 2.0 cm × 2.0 cm parallel-plate capacitor with a 2.0 mm spacing is charged to ±1.0 nC. What is each particle's speed as it reaches the plate
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
A 70kh man jumping from a window lands in an elevated firerescue net 11.0 m below the window. find the leastic potential energy of the net when it is stretched by 1.50 m
A rod is initially at a uniform temperature of 0 o C throughout. One end is kept at 0oC , and the other is brought into contact with a steam bath at 100 o C.
A professor shipwrecked on Hooligan's Island decides to build a telescope from his eyeglasses and some coconut shells. Which lens should he use as the objective
A diatomic gas does 320 J of work and also absorbs 600 cal of heat. What is the change in internal energy of the gas?
question a glass is half-full of water with a layer of vegetable oil n 1.47 floating on top. a ray of light traveling
An energy of 39 joules is stored in a metal sphere. If a sparkcarrying 3 x 10-4 C discharges the metal sphere, find the sphere's electric potential before the discharge
a boy hears an eco of his own voice from a distant hill after 1s. The speed of the sound is 340m/s. What is the distance of the hill from the boy
A string provides a horizontal force which acts on a 500 N rectangular block at top right-hand corner, find the tension in the string required to start to tip the block over
A converging lens with a focal length of 31 cm is used to form an image on a screen that is 2.7 m to the right the lens. Where must the object be placed
A 67.3 ice skater moving to the right with the velocity of 2.52 throws a .151 snowball to the right with a velocity of 33.7 relative to the ground. What is velocity of the ice skater after throwing the snowball.
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