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Voltage is directly proportional to resistant (V=IR) and resistance increases with temperature due to increased vibrations of the molecules inside the conductor. Therefore voltage increases as temperature...

Newton's First Law states that an object will continue moving at the same velocity in the same direction unless a resultant force acts upon it. This applies to stationary objects too - if an object is sti...

Since there is no loss of energy to air resistance and the apple is freely falling under the influence of gravity, this is an example where we can apply the principle of conservation of energy. In the ini...

We have values for the mass and the acceleration of the van, so we can work out the resultant force acting on it using Newton’s second law: F_r = ma F­_r­ = 2150 x 3 = 6450N Driving fo...

A convection current is the way that heat is transferred throughout a fluid. By fluid, we mean a liquid or a gas, where the molecules are free to move. Imagine a cup of water being heated from the bottom....