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The first thing you need to do is to decide what is kept constant within the system. (P.S. Essentially all problems in physics require conservation laws to some extent) In the case of components in ...
Centripetal Force = (mv^2)/r
The centripetal force must always act towards the centre of the circle in which the satellite is travelling. Therefore it is a attractive force from the Earth and henc...
Newton's first law of motion states 'an object will only experience acceleration if a resultant force is acting on it'. This means that only unbalanced forces will cause a change in the speed of the objec...
The photo-electric effect is the process in which a metal will emit electrons when light of a sufficiently high frequency is incident upon it, Before Einstein's description of the photo-electric effect th...
distance = velocity*time= 180 km
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