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A copper pot with mass 0.500 kg contains 0.170 kg of water ata temperature of 20.0ºC. A 0.250-kg block of iron at85.0ºC is dropped into the pot. Find the final temperature, assuming no heat loss to the surroundings
Simultaneity principle The principle that all of the frames of reference will have invariant simultaneity; i.e., two events perceived as simultaneous (that is, having the simi
Explain Constant voltage system Constant voltage system : In this process voltage is kept constant but results in very huge charging current in the starting when the back emf
An object is thrown at 25 m/s at 39 degrees above the horizontal from a 40m tall cliff. How long is it in the air?
kilogram; kg: The basic SI unit of mass, that only SI unit which still maintained by a physical artifact: a platinum-iridium bar kept in the International Bureau of Weights an
Q. Measurement of Wavelength of Monochromatic Light? Monochromatic Light is allowed to fall on plate G 1 . The M.I. is adjusted for circular fringes. For this mirror M 1 is ma
brewsters law
A record player's needle is 6.5 cm from the center of a 45-rpm record. Calculate velocity of the needle?
Diffraction of water waves Let vibrator produce circular wavefronts travelling along (P). Let X, Y be two vertical glass plates immersed in the tank far away from the vib
A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 440 Hzsource of sound. The microphone vibrates up and down in s
Reducing friction by an air stream Cut out a disc of cardboard about 10 cm in diameter. With a red-hot pin, burn a hole by the centre. Saw a small cotton reel in half and glue
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