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An object with a mass of 5 kilograms is a distance of 5 meters above the surface of the earth.
If the acceleration because of gravity is 10 meters per second squared, the potential energy of the object relative to the surface of the earth is:
a) 10 joules
b) 20 joules
c) 100 joules
d) 250 joules
e) none of the above
Ans- 250 Joules
a wave of eqn y=0.005sin(8x-3t).find displacement when x=0.3 t=20s?in the answer given y=0.005sin(80*3-0.3*20)= y=0.005sin(-36+12pi).what is this 12pi?
What is the Directionality of LASER? Directionality: Laser emits light which is highly directional. Laser light is emitted like a relatively narrow beam in an exact direction.
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X-rays was discovered by scientist Rontgen that's why they are also known as Rontgen pulses. Rontgen discovered that when pressure inside a discharge tube kept 10 -3 mm of Hg a
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It is a highly doped p-n junction which is not smashed by high reverse current. The breakdown voltage is made very sharp. In the forward bias, the zener diode do as ordinary diode.
Who discovered Proton? In 1886 Eugen Goldstein discovered canal rays (also called as anode rays) and showed that they were positively charged particles (ions) formed from gases
in some case we take y=-g but in some case we take y=g... why???
application of electrostatic
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