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Question: Decibel readings in Problem use the fact that the loudness of sound (in decibels) perceived by the human ear depends on intensity levels according to
L = 10 log (I/I0)
where I0 is the threshold of hearing for the average human ear.
A sound that causes pain has intensity about 1014 times I0. Find the decibel reading for this threshold.
What is the magnitude of the normal force that each brake pad applies to the rim . find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
A Knight of the Round Table fires off a vat of burning pitch from his catapult at 13.4 m/s, at 40 degree above the horizontal. Determine how long is it in the air
A capacitor in an RC circuit is charged to 46.6% of its maximum value in 0.781 s. What is the time constant of the circuit
a solid block is suspended from a spring scale. the reading on the scale when the block is completely immersed in water
The center of the spherical metal ball of radius R, carrying a negative charge -Q, Determine the polarizability of the wire segment which has a length L = 0.0145 m
The position of a ball rolling in a straight line is given by x=2.9 3.8t+5.2t2, where x is in meters and t in seconds. What is its instantaneous velocity at t= 2.0s and at t= 5.0s?
two metal balls are hung from strings. the first ball 0.09 kg is pulled to the side and released so that it strikes the
A sound of frequency 200 Hz is reflected off an approaching car. What is the frequency of the reflected sound
Reputable articles on nuclear powered aircraft carriers may be readily found on the internet.
A hoop and a cylinder of the same mass and outer radius are rolled up an incline plane with the same speed. Which goes farther up the incline plane? Explain
Explain the notion of statistical adequacy and discuss its importance for statistical inference.
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 88.0kHz and an rms strength of 6.35×10?9T
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