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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
Illustrate the term temperature sensor? Temperature sensor: Bimetal coated onto the tip of fiber. When temperature increases the bimetal bends because of difference within t
It states that at temperatures Curie temperature the magnetic susceptibility of ferromagnetic materials is inversely proportional to (T - Tc) i.e
Q The resistance of a platinum wire at 0 o C is 4 Ω. What will be the resistance at 100 o C, if the temperature coefficient of resistance is 0.0038/ o C. Resistance at 100 o
NEWTON'S FIRST LAW OF MOTION: This law states that "A body at rest will remain at rest and a body moving with uniform velocity will carry on doing so, until acted on by some un
Write two characteristic features of nuclear force which differentiate it from the Coulomb force.
ACCELERATION DUE TO GRAVITY. In the absence of air resistance, all objects in free fall near the surface of the earth move in the direction of the earth with a uniform accelera
ohmmeters: The use of ohmmeters is somewhat more involved. Most importantly when measuring resistance the circuit power must be switched off, power is derived from within the i
How could you predict the spontaneity of a chemical reaction, given changes in entropy and enthalpy?
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what is gravitional constant? mention its SI value
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