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Solve the following problem given below:
Problem: A 287g ball is tied to a string. It is pulled to an angle of 4.0o and released to swing as a pendulum. A student with a stopwatch finds that 30 oscillations take 17s.
Part A- How long is the string?
Please show how you get the answer of above problem. Thank you.
A 1250-kg elevator starts from rest. It moves upward for 4.00 seconds with constant acceleration until it reaches its cruising speed of 3.50 m/s. What is the average power of the elevator motor
Using two optical elements which may be two lenses, one lens and one mirror, or two mirrors, invent an optical system that creates an erect image of a candle on a wall that s 10 times its actual height. Show your ray tracings and be sure to indicate..
The muon with mass mμ = 209 me, acts as a heavy electron. The muon can bind to a proton to form a muonic atom. Calculate the ionization energy of this atom, and compute the radius of the muonic atom in its ground state. Ignore reduced mass effects.
1. a capacitor consists of two closely spaced metal conductors of large area separated by a thin insulating foil. it
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 4.7 V. What is the average power delivered to the circuit?
One afternoon, you are playing on a wooden basketball court with a hula-hoop to amuse yourself. find the hoop's speed just before it hits the wall
A beam of light is incident on a plane mirror at an angle of 32 degrees relative to the normal. What is the angle between the reflected rays and the surface of the mirror?
In a Compton scattering experiment, an x-ray photon scatters through an angle of 21.0° from a free electron that is initially at rest. The electron recoils with a speed of 2,520 km/s. Calculate the wavelength of the incident photon.
A sled and rider with a combined weight of 63 kg are at reston the top of a hill 11 m high. What is their total ebergy at the top of the hill ?
a rocket blasts off from rest and attains a speed of 49 m/s in 14 s. What is the astronaut's apparent weight during take off
5.1-microc point charge is located atnbspxnbsp 1.1 mnbspynbsp 2.8 m and a -3.9-microc point charge is located
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 671 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.029 m below the center. What is the horizontal distance betwee..
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