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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
What is magnetic moment of a bar magnet 1. When a bar magnet of pole strength (m) and length (2l) is suspended freely in air,it always turns along the magnetic north (N) and S
I want a physics project working model on magnet.
Define Heat engine Heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat into work. It is explained as the ratio o
Triangle of force Two or more forces can be added or subtracted to produce a Resultant Force . If two forces are equal but act in opposite directions, then obviously they can
What is a capacitor and measure capacitance of (i) of a plane plate capacitor (ii) of a cylindrical capacitor (iii) of a spherical capacitor
What is the Principal value branch of i i Ans) Principal value branch of ii=e-π/2
Electric Motor: A device, which converts electric energy into mechanical energy is known as Electric Motor. Factors on which the speed of Rotation of Motor Depends: The
Determine the highest order spectrum which can be seen with monochromatic light of 589.3 nm wavelength by means of a diffraction grating having 15000 lines/inch.
Q. Define: the temperature coefficient of resistance. The ratio of raise in resistance per degree rise in temperature to its resistance at 0 o C is called as temperature coeff
In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity. (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will d
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