Calculate the work done when a force of 20N stretches a s...
Calculate the work done when a force of 20N stretches a spring by 50mm.
0.5J
1.5J
2.0J
2.5J
Correct answer is A
W = 12Fe
W = 12×20×0.05
W = 0.5J
A cell of e.m.f. 1.5v is connected in series with a resistor of 3Ω. A high resistance voltm...
Calculate the heat energy required to vaporize 50g of water initially at 80ºC if the speci...
The ability of the human eye to focus object on the retina is referred to as the power of? ...
The strength of an electromagnet increases with ...
Which of the following scientists postulated that moving particles exhibit wave properties? ...
For the wave motion represented above The wavelength is given by...