500.0ms-1
100.0ms-1
70.0ms-1
50.0ms-1
Correct answer is B
V2 = U2 + 2gs
V2 = 0
V2 = 2gs
h = 500m
g = 10ms-2
V2 2 x 10 x 500
V2 = 10,000
V = √10000
V = 100ms-1
In the diagram above, the time taken to trace a wave between P and Q is? ...
Which of the following optical instruments does not depend on the use of plane mirrors? ...
The images formed by a diverging lens are always ...
If the frequency of an emitted x-ray is 1.6 x 1016Hz, the accelerating potential is? [...
Two balls X and Y weighing 5 g and 50 kg respectively were thrown up vertically at the same tim...
The main reason why a.c. is transmitted at very high voltage and low current is that ...