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Calculate the time taken for 1000L of water at rtp to be heated to 40degrees celsius using a 40kW heater

First the starting parameters of the fluid should be calculated, so at rtp the density of water is 1kg/L therefore mass is 1000kg and the temperature is 20 degrees C. The next step would be to plug these val...
CA
Answered by Cameron A. • Physics tutor
3318 Views

"A fear of democracy runs through liberalism". Discuss.

A fear of democracy is present in classical liberalism through their opposition to universal suffrage, fear of tyrannical majoritarian mob rule and support for constitutional constraints upon democratically ...
KK
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A block mass m lies on an incline rough plane, with coefficient of friction µ. The angle of the block is increased slowly, calculate the maximum angle of the slope that can be achieved without the block slipping.

First draw out the free body diagram for the problem, marking on all forces acting on the objects ie. the mass of the block and the reaction force normal to the plane and the forces acting due to friction. A...
CA
Answered by Cameron A. • Maths tutor
4790 Views

Given that the binomial expansion of (1 + kx) ^ n is 1 - 6x + 30x^2 + ..., find the values of n and k.

Setting (1 + kx) n equal to 1 - 6x + 30x 2 + ..., the binomial expansion can be applied to the LHS, by making use of the formula provided in the formula book. In this case, where x appears in the formula boo...
SG
Answered by Sanchit G. • Maths tutor
14944 Views

We are given so much information for each topic... how do I know which bits are relevant for a particular question?

It can be so hard to identify which of all the masses of facts and figures and definitions you have learnt you need to include for a particular question, especially given the degree to which topics and theme...
JF
2312 Views