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A pendulum consists of a 3.8 kg stone swinging on a 3.6 m string ofnegligible mass. The stone has a speed of 9.4 m/s when it passesits lowest point. (a) What is the speed when the string is at 64° to the vertical? (b) What is the greatest angle with the vertical that the string will reach during the stone'smotion? (c) If the potential energy ofthe pendulum-Earth system is taken to be zero at the stone's lowestpoint, what is the total mechanical energy of the system?
A 65.0 kg weight watcher wishesto climb a mountain to work off the equivalent of a large piece ofchocolate cake rated at 480 (food)Calories. How high must the person climb
A tennis ball is thrown toward a vertical wall with a speed of 22.0 m/s at the angle of 40.0° above the horizontal. The horizontal distance between the wall and the point where the tennis ball is released is 28.0 m.
Nearly plane waves of C02 laser light of wavelength l = 10.6 m emerge from a circular aperture 10 cm in diameter. If the C02 laser light is to be examined on a target in the far field
you are in a boat that can move in still water at 7.0 ms. you point your boat directly east across a river to get to
A capacitor is connected across the terminals of an ac generator that has a frenquency of 460 Hz and supplies a voltage of 24 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.18 A. ..
your are sitting in your car which is standing at the side of the road with the engine idling. in the rearview mirror
A cylinder which is in a horizontal position contains an unknown noble gas at 5.26 × 104 Pa and is sealed with a massless piston. calculate the change in internal energy of the system
question114g of nitrogen gas at stp are adiabatically compressed to a pressure of 20atm. what are?a final temperatureb
Two spaceships approach Mars from the same direction. One has a speed of 0.2c, What is the speed of one spaceship relative to the other
a glass bottle of soda is sealed with a screw cap. the absolute pressure of the carbon dioxide inside the bottle is
A double-slit interference pattern has a fringe (a “fringe” is an interference maximum) spacing of 4.0 mm. How far from the central maximum is the first position at which the intensity is equal to I1, the intensity due to each individual slit? In thi..
A person working on the transmission of a car accidentally drops a bolt into a tray of oil. The oil is 4.86 cm deep. What is the index of refraction of the oil
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