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The nucleus is made up of protons and nuetrons, which means there is an electric repulsion. The nucleus is held together by somethign called the strong nuclear force. This overrides the electromagnetic re...

convert 30km/h = 8.3 m/s

calculate initial vertical speed U_v = 4.15m/s, calculate initial horizontal speed = 7.19m/s

apply suvat equations v = u + at, s = ut + 1/2at^...

The Moon has a lower gravitaional field strength than the Earth, and it does not have an atmosphere. The lower gravitational field strength means that there is lower acceleration, which results in an incr...

When ice (or ice cold water) is added to a drink, the two substances move towards thermal equilibrium (the point where there is no net energy transfer between the two substances, and they have the same te...

Well we know that the power of the bulb is given by P = IV. Therefore the power = (20 x 10^-3 Coulomb per second) * (5 Joules per Coulomb) = 100 x 10^-3 Joules per second = 0.1 W.