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A small lead ball, attached to a 1.6-m rope, is being whirled in a circle that lies in the vertical plane. The ball is whirled at a constant rate of four revolutions per second and is released on the upward part of the circular motion when it is 1.6 m above the ground. The ball travels straight upward. In the absence of air resistance, to what maximum height above the ground does the ball rise?
A proton moves with a velocity of v= (2i ? 5j +k ) m/s in a region in which the magnetic field is B= (i + 2j ?k ) T. What is the magnitude of the magnetic force this particle experiences?
When a single person shouts at a football game, the sound intensity level at the center of the field is 59.9dB. how many people are at the game
An 34-kg person puts on a life jacket, jumps into the water, and floats. What is the density of the life jacket
q1. a 60 kg circus performer jumps from a 6.2 m height onto a trampoline and stretches it downward 0.36 m. assume that
a point particle that has a charge of 18.0 microc is located at x 0 y 0 and a point particle that has a charge q is
How much time would it take for her to emit a net radiant.
You are measuring the speed of a projectile using sonar. If the output frequency of 265.5 Hz is reflected back and received by the stationary sonar unit at 251 Hz, what is the speed of the projectile
2.2 mol of neon gas is initially at a pressure of 1.8 atm and a temperature of 253oc. i if the gas is cooled at
A 24kg chimpanzee hangs from the end of a horizontal, broken branch of length L0 = 1.4m , What is the shear modulus for this branch
a series rlc ac circuit has a capacitive reactance of 55 w and inductive reactance of 25 W and a resistance of 40 W. what is the impedance of this circuit
a. find the flares maximum height if it is fired on the level salt flats of utah.b. find the distance from its firing
As a city planner, you receive complaints from local residents about the safety of nearby roads and streets, calculate the miminim and maximum braking distance needed to ensure that all vehicles traveling at the posted speed limit can stop before r..
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