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An electric Iron rated at 2600 W contains a steel plate, heated to a working temperature of 215°C. Room temp=18°C. Deduce whether the plate could reach its working temperature in less than 1 minute. Mass (steel plate)=890g & C (steel)=450J/kg/K

We are given the power of the iron, 2600W and we know that Power = Energy/Time. We are also given the specific heat capacity of steel (C) which gives us a clue that we should use ...

OB
Answered by Oni B. Physics tutor
3541 Views

Simplify fully 3/(2x + 12) - (x - 15)/(x^2 - 2x - 48)

The first step to answering this question is recognising that the denominators should be factorised to find any common factors. Factorising 3/2x+12 gives 3/2(x+6) and factorising (x-15)/(x2-2x-...

AC
Answered by Archie C. Maths tutor
4546 Views

Compare how two poets present ideas of power in Ozymandias and another poem in the [Power and Conflict] anthology

Both Shelley's 'Ozymandias' and Blake's 'London' show how nature will always be more powerful than mankind and the attempts made by humans to control it are powerful. The statue in Shelley's 'Ozymandias' ...

AO
Answered by Asha O. English tutor
130631 Views

f(x) = 2x+3/x-4 Work out f ^–1 (x)

first off, replace all x values with y and all y values with x, which gives us, X = 2Y + 3 / Y - 4 rearrange to give, X(Y - 4) = 2Y + 3 expand the bracket, XY - 4X = 2Y + 3 rearrange to get all Y...

DJ
Answered by Dean J. Maths tutor
2486 Views

40 students were surveyed: 20 have visited France 15 have visited Spain 10 have visited both France and Spain. Use this information to complete a Venn Diagram

10 students went to both France and Spain. This means the intersection of the two circles has 10 people. Use this information to subtract 10 from the 20 that visited France and the 15 that visited Spain. ...

SS
Answered by Sahil S. Maths tutor
6418 Views

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