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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?
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of a chamber
Two vehicles approach a right angle intersection and then collide. find the magnitude and direction of the final velocity of the wreck
At point A, 4.80 m from a small source of sound that is emitting uniformly in all directions, the intensity level is 54.0 dB. What is the intensity of the sound at A
The cable lifting an elevator is wrapped around a 1.0--diameter cylinder that is turned by the elevator's motor. The elevator is moving upward at a speed of 2.3 . It then slows to a stop, while the cylinder turns one complete revolution.
a cylindrical wooden log is loaded with lead at one end so that it floats upright in water. the length of the submerged
Steam can cause more serious burns than water at the same temperature. Here we examine this effect quantitatively, noting that flesh becomes badly damaged when its temperature reaches 50.0 C a)Calculate the heat released as 13.0g of liquid water a..
A telescope has an objective with a refractive power of 1.00 diopters and an eyepiece with a refractive power of 300 diopters
a visible light photon takes 8.3 minutes to travel from the solar photosphere to the earth. calculate how long it would
In a capacitor, one side accumulates charge because the battery is putting charges on it. Explain how the other plate becomes charged. In addition, explain why, as a plate accumulates charge, it becomes harder and harder to put more charges onit.
Two atmospheric sound sources A and B emit isotropically at constant power. find the ratio of the larger power to the smaller power
A 1.5 kg box slides down a frictionless incline of angle . It starts from rest at t=0 at the top of the incline at a height of 22 m above the ground. What is the potential energy of the box relative to the ground at t=0
The coefficient of static friction between the 3000 lb car's tires and the road is 0.5. Determine the steepest grade the car can drive up at constant speed if car has (a) rear=wheel drive; (b) front-wheel drive; (c) four wheel drive.
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