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You watch a distant carpenter driving his nails into the side of a house at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see. You then hear one more blow after you see him stop hammering. How far away is he? Justify your ANSWER---BE BRIEF.
Solution1 : The information tells you that sound travels for one second before reaching you the actual distance will depend on temperature, since the speed of sound varies with temperature, at 20 deg C it is approx 343m/s, so if this is a nice spring day, you are 343m away
To work out the gravitational potential energy of an object the equation is: GPE = m x g x h Where: m = the mass of the object (kg) g = gravitational field strength (on earth tha
A forced harmonic oscillator is at resonance with some periodic force. Evaluate the phase difference between the driving force and the velocity of the oscillator?
How does a manometer measure gas pressur?e
Used normally, a 150-watt, 120 volt light bulb requires how many amps of current? Ans: Used generally, a 150-watt, 120 volt light bulb needs 1.25 amps.
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
What are the applications of nmr spectroscopy? The major applications of NMR stereoscopy are the elucidation of the carbon-hydrogen backbone of organic compounds and the determ
what type of transformer we use in this
short answer
Angle of friction is the angle between the resultant vector(resultant vector:-resultant vector of frictional force and normalforce) and normal force vector.
Q. Explain what is free fall acceleration? Answer:- On earth free drop acceleration is 9.81 meters per second per second or 32.2 feet per second per second not including a
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