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Question: A 60 year old person has a threshold of hearing of 95.0 dB for a sound with frequency f=10,000 Hz. By what factor must the intensity of a sound wave of that frequency, audible to a typical young adult, (sound level=43.0 dB) be increased so that it is heard by the older person. Please provide the complete solution of this problem.
Estimate the mean free time between collisions for the conduction electrons in aluminum at 25 , and hence estimate their drift mobility
A tank of water sits at the edge of a table of height 0.9 m. The tank springs a very small leak at its base, What is the water level h in the tank
find out where the coyote lands in the canyon.
An object is on a hill at an angle. It is pushed down the hill which has coefficients of friction uk. Find the time it takes both objects to reach the bottom
question anbsp skier of mass 70kg is pulled up a slope by a motor driven cable. how much work is required to pull him
Explain what is meant by ballasting stating its importance and its limitations in mechanics.
q1. a small statue in the shape of a falcon is painted black and has a weight of 24.1 n. the owner of the statue claims
an air capacitor is made from two flat parallel plates 1.50 mm apart. the magnitude of charge on each plate is
a converging lens forms a real image 1.27 times the size of the object. The object distance is 22cm. Find the distance of the focal point from the center of the lens
An 8.0 magnitude seismic wave is traveling to a city which is 100 kilometer away. Find how much time do the city residents have before it hits them
As shown in the figure, a pond has the shape of an inverted conewith the tip sliced off and has a depth of 5.0 m. The atmosphericpressure above the pond is 1.01 × 105 Pa. The circular topsurface (radius = R2) and circular bottom surface(radius = R..
A rod of 2.0-m length and a square (2.0 mm x 2.0mm) cross section is made of a material by resistivity of 6.0x10-8Ω times m. If a potential dissimilarity of 0.50 V is placed across the ends of the rod, at what rate is heat generated in the rod?
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