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A student holds a tuning fork oscillating at 201 hz. He walks towards a wall at a constant speed of 1.38 m/s.
(a) What beat frequency does he observe between the tuning fork and its echo?
Hz
(b) How fast must he walk away from the wall to observe a beat frequency of 5.00 Hz?
Find out the maximum distance d (along the ladder) that the monkey can climb up ladder before the rope breaks.
An archer puts a 0.26 kg arrow to the bowstring. An average force of 213 N is exerted to draw the string back 1.3 m. unless otherwise directed, suppose that air resistance is negligible. Illustrate energy bar graphs to solve the problem.
The lenses of a particular set of binoculars have a coating with index of refraction n = 1.38, and the glass itself has n = 1.52. what is the minimum thickness of the coating
Estimate how many times planet has orbited its star
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone (between the elbow and the shoulder joint), What is the compressional strain of the humerus
Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 9.50 rad/s. how far would you have gone if the bike could move
A gardener pushes a box of tools across a driveway by applying a 22.5- N force that pushes downward at an angle of 23.1 o, How much work is done if the box moves 2.55 m in the horizontal direction
Two light bulbs labeled 50 W and 100 W, find the actual power consumed by the brighter bulb
as two trains move along a track their conductors suddenly notice that they are headed toward each other. the figure
How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than as the car is stationary? The speed of sound is 343 m/s.
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.10 m2, what is the percentage lost by the window
A mine car (mass=490 kg) rolls at a speed of 0.50 m/s on a horizontal track, as the drawing shows. Determine the speed of the car-coal system
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