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What is the work done to take a particle of mass m from surface of the earth to a height equal to 2R (R=radius of earth )? Ans) Initial PE= - GMm/R Final PE = - GMm/3R
Define about the Heat Loss? An immersion heater of power J=500 W can be used to heat water in a bowl. After 2 minutes the temperature enhance from T 1 =85 o C to T 2 =90°C. Th
Electrical measuring instruments: Quantities of electrical current, voltage and resistance are measured using instruments called meters. Until the advent of electronic displays
Rules to verify how many significant numbers has in a calculated quantity: 1. All nonzero digits are significant. As like 457 cm has three significant values; 0.25 g has two si
A skydiver falls d1 = 495 meters in t1 = 22 s before opening his parachute. After the chute opens, he falls an additional d2 = 470 meters in t2 = 56.5 s. (a) Write an expression t
Explain semiconductor and data storage of electron microscopy. Semiconductor and data storage a. Circuit edit b. Defect investigation and c. Failure analysis.
1. A screw gauge consists of U- shaped metallic frame F. To one end of this frame, a flat shaft is fixed. On the opposite end of a hollow long cylinder C is fixed. 2. The hollow c
A house is air conditioned using solar energy. Solar radiation heats a pressurized tank such that the temperature is maintained at 175 o C. 1500 kJ must be extracted from the hous
A tunning fork produces 4 beats per second with another tunning fork of frequency 256 Hz. The first one is now loaded with a little wax and the beat frequency is found to enhance t
What is the position vector of point c in equilateral triangle?
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