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A 1.4kg block and a 2.7kg block are attached to opposite ends of a light rope. The rope hangs over a solid, frictionless pulley that is 27cm in diameter and has a mass of 0.78kg .When the blocks are released, what is the acceleration of the lighter block?
An object is placed 55.5 cm from a screen. Where should a converging lens of focal length 8.0 cm be placed to form an image on the screen, Find the magnification of the lens
A 52-kg mountain climber, starting from rest climbs a vertical distance of 730m. At the top, she is again at rest. Find her efficiency as a heat engine
A gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. How many moles of gas leaked
An electron moving at a speed of vi= 0.960c in the positivex direction collides with another electron at rest, Based only on the original data given in the problem, use conservation of energy to find the speed of the second electron
You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. What is the snail\'s displacement ?x in centimeters
Consider 10 air molecules in an otherwise empty room. Find the probability that exactly four molecules are in the front third and exactly six in the top half, exactly three molecules are both in the front third and the top half (that is, the same mol..
A sledge with bricks has a total mass of 180.0 kg and is pulled at a constant speed by a rope inclined at 20 degrees above the horizontal. The sledge moves a distance of 20 m on a horizontal surface.
question1the driver of an 1800rm kg car travelling on a horizontal road at 114rm km rm h suddenly applies the brakes.
A simple pendulum is 7.00 m long. What is the period of simple harmonic motion for this pendulum if it is located in an elevator accelerating upward at 5.00 m/s2
The driver of a car slams on the brakes when he sees a tree blocking the road. With what speed does the car then strike
A 0.65kg block of ice is sliding by you on a very slippery floor at 3 m/s. As it goes by, you give it a kick vertical to its path. Your foot is in contact with the ice block for 0.003 seconds.
A television is tuned to a station broadcasting at a frequency of 8.50 107 Hz. Find the optimum length of the antenna
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