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A wave on a string is described by D ( x, t ) = (2.00)sin{(12.57rad/m)x-(638rad/s)t} where x is in m and t is in s. The linear density of the string is 5.00g/m What is the string tension? What is the maximum displacement of a point on the string? What is the maximum speed of a point on the string?
Suppose for a brief moment the gas molecules hitting a wall stuck to the wall instead of bouncing off the wall. How would the pressure on the wall be affected
A grating spectrometer is used to resolve second order peaks from two wavelengths of ?1 = 495.00 nm and ?2 = 495.71 nm. What is the minimum number of slits this grating must have
An isolated conducting sphere has a 9cm radius. One wire carries a current of 1.000 002 0 A into it.Another wire carries a current of 1.000 000 0 A out of it. How longwould it take for the sphere to increase in potential by800 V?
suposse that a ferrari and a porsche begin a race with a moving start and each moves with constant speed. one lap of
Calculate the energy needed to accelerate a spaceship of mass10,000 kg to a speed of .3c for intergalactic spaceexplortation. Compare this with a projected annual energy usage onEarth of 1021.
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker (without reflecting from the walls) create an intensity level of 75.1 dB. What is the total intensity level
a near-sighted person might correct his vision by wearing diverging lenses with focal length f 60 cm. when wearing his
The light bulb used in a slide projector draws a power of 480 watts when operating on 120 volts. What is the bulb’s resistance? What is the current which is passing through the bulb?
A professional golfer is examining a video of a practice swing. The high-speed footage shows that his club is in contact with the ball (which was initially at rest on the tee) for only 0.471 milliseconds, and the radar gun clocks the speed of the ..
A child's toy consists of a piece of plastic attached to a spring, estimate the force constant of the spring
A 2,200-kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver
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