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A kettle requires 2400 Coulombs of charge to pass through its heating element, with a resistance of 6 Ohms, in a time of 200 seconds in order to boil the water inside it. Calculate the current flowing and the power of the kettle.

I=Q/t=2400/200=12AP=IV=I^2R=12^2*6=864W
Of course, when discussing the answer with a student I would verbally explain each step in detail and add more drawings to my workings. Unfortunately,...

SL
Answered by Sam L. Physics tutor
6718 Views

Find the equation of the normal of the curve xy-x^2+xlog(y)=4 at the point (2,1) in the form ax+by+c=0

differentiating: xy'+y-2x+(x/y)y'+log(y)=0rearranging: y'=y(2x-y-log(y))/x(1+y)at (2,1): y'=3/4 so gradient of normal at (2,1) is -4/3so the equation of the normal is y-1=(-4/3)(x-2)which is equivalent to...

SL
Answered by Sam L. Maths tutor
3192 Views

Solve the simultaneous equations y = x^2 +3x and y = x+8

Because both of the equations are equal to y, the first thing we do is make them equal to each other:x^2 + 3x= x + 8We then want to rearrange the equation so that everything is on the same side of the equ...

JW
Answered by Jessica W. Maths tutor
4023 Views

Explain one benefit of providing induction training for employees (3 marks).

Induction training enables new recruits to learn the business procedures their organisation follows, meaning they will be less likely to make mistakes and become productive employees as quickly as possibl...

LW
4834 Views

Explain and discuss the causes of MSLR (Mean Sea Level Rise)

This question draws on knowledge from the IB Topic : Consequences of Global Climate Change- Sea level section. Tip- Impress your examiner by showing awareness of how the causes of sea level rise are very ...

JB
Answered by Jordi B. Geography tutor
2268 Views

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