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A kettle boils 0.6kg of water. After some time the temperature of the water has decreased to 83 degrees. The specific heat capacity of water is 4200J/kg. Calculate the energy transferred to the surroundings.

The variables we are given are mass (m), time (t), temperate CHANGE (delta T) and SHC (c) and we are asked for energy. Think of the equations for energy we know: mgh, 1/2mv 2 , mcdeltaT...the first two energ...
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Answered by Alice D. • Physics tutor
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What are the definitions of a)voltage and b)current?

a) Current is defined as the rate of flow of charge; I = Q/t (Current is charge/time).b) Voltage is an electromotive force which drives the charge around the circuit. A potential difference between two point...
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Answered by Shrey C. • Physics tutor
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Using newtons laws explain how a falling object can reach terminal velocity (6)

So we need to break this down into two parts, what are Newtons laws and what is terminal velocity? In this case we will only need the first two of Newtons laws. Number one " An object will remain at res...
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Answered by Robert S. • Physics tutor
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Can you explain the difference between distance and displacement

Distance is a scalar which means it only has a length- it is the length of distance travelled along a pathDisplacement is a vector which means it has a direction and a length and is the total change in posit...
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Answered by Emma H. • Physics tutor
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Imagine a box sliding down a rough slope. What will the free body diagram for the box look like?

In a free body diagram for a box on a rough slope, there will be three arrows. One will point out of the box up the slope (parallel to the slope), one will point directly downwards from the box, and the fina...
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Answered by Eve T. • Physics tutor
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