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First we should quickly remind ourselves of the equation for density:density= mass/ volumeTo calculate the density we need a method of measuring the mass of each object and another method for measuring th...
With these long answer questions the examiners want to see both the quality of your English and your knowledge of the topic. Typically, this means using key words and phrases. The numbers in the brackets ...
(There is a diagram showing stairs with steps that are 20cm high)Power = Energy/TimeEnergy required to climb one step = Work Done = ForceDistanceForce = Weight = mg = 509.81 = 490.5NEne...
(Question can be sketched with a graph) Firstly, in order to have atmospheric pressure, air molecules must collide with a surface, in this case the face of the Earth. As you gain altitude (height from fac...
p = 17.9 kgm/s. p = mv. v = d/t. p = md/t. p = (5 x 50)/14
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