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Find the mechanical energy of a block-spring system having a spring constant of 0.67 N/cm and an oscillation amplitude of 1.5 cm.
A rowboat crosses a river with a velocity of 3.51 mi/h at an angle 62.5° north of west relative to water. The river is 0.8 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore.
An object is released from rest and falls in free fall motion. The speed v of the object after it has fallen a distance y is given by v2 = 2gy, what is the percent uncertainty in the calculated value of g
illustrate what is the new horizontal distance L between the base of the slide and the splashdown point of the person?
Suppose that the amplitude and frequency of the transverse wave, Find the total vertical distance (in cm) through which the colored dot moves in 3.8 s
Two people stand 3 m away from a large plane mirror and spaced 3.8 m apart in a dark room. At what angle of incidence should one of them shine a flashlight on mirror so that the reflected beam directly strikes the other person.
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1040 Hz, What is the speed of the bird, expressed as a percentage of the speed of sound
at the local county fair, you watch as a blacksmith drops a 0.50kg iron horseshoe into a bucket containing 25kg of water. what is the equilibrium temp of the system
A beam of parallel rays from a 24 MHz citizens band radio transmitter passes between two electrically conducting (hence opaque to radio waves) buildings located 45.00 m apart. What is an angular width of the beam as it emerges from between the buildi..
A transformer is to be used to provide power for a computer disk drive that needs 5.8 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
The two springs each have a spring constant of 11. They are stretched by 1 as a current passes through the wire. How big is the current.
A small block with mass 1 kg slides in a vertical circle of radius 0.5 m on the inside of a circular track. how much work is done by the friction force on the block
A man stands on a platform that is rotating (without friction) with an angular speed of 0.361 rev/s; his arms are outstretched, what is the resulting angular speed of the platform
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