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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
Change in PE=Work Done= 2GMm/3R (ANS.)
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
new ideas for physics projects ?
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