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A 10-uF, a 20-uF, and a 50-uF capacitor are connected in series across a 160 volt source. What voltages appear across each capacitor after it is fully charged. What value of charge is on each capcitor?
A 630-Hz sound travels through pure hydrogen. What is the speed of sound in hydrogen
Explain how much force must you exert to keep the pole motionless and horizontal?
A horizontal spring with k = 72N/m has one end attached to a wall and the other end free. find maximum spring compression
An engine has a maximum theoretical efficiency of 45%. If the temperature difference between the input, what is the exhaust temperature
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 64 kg person develops a power of 65W throughout a race, how fast is the person running? Assume that a running step is 1.5 m long.
In a typical game of squash, two people hit a soft rubber ball at a wall until they are about to drop due to dehydration and exhaustion. What will be the temperature increase of the ball after one bounce
A refinery buys gas that is metered at 52 degrees F and 250 psig. The refinery pays for the gas in a price per SCF. How many SCF were purchased
Forces of 11.0 N norths, 19.5 N east, and 15.90 N south are simultaneously applied to a 3.70 kg mass as it rests on an air table. What is the magnitude of its acceleration.
Sound with a frequency of 431 Hz travels through steel. A wavelength of 11.27 m is measured. determine the speed of the sound in steel
A Ferris wheel with radius 38m is driven by a motor that exerts a force on the wheel 1m from the center. find the normal force at the bottom of the wheel's trajectory
Approximately how many atoms make up our planet? For simplicity, suppose the average atomic mass of the atoms is 14 . Avogadro's number gives the number of atoms in a mole.
A bat strikes a 182g ball with a force of 109-N at an angle of 57° above the horizontal. What is the ball's vertical acceleration (positive for upward, negative for downward).
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