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Jodie buys 12 cans of cola. There are 330 ml of cola in each can. Rob buys 4 bottles of cola. There is 1 litre of cola in each bottle. Rob buys more cola than Jodie. How much more?

The answer is: (4X1000)-(12X330)= 40, ao 40 ml more. You may wonder why 1 litre is 1000, as 1 litre of cola= 1000 ml of cola so we have to convert 1 L to 1000ml in the anwer. Rob buys more cola than Jodie me...
MK
Answered by Michelle K. • Maths tutor
3780 Views

What is wave-particle duality?

As you may have already seen, light sometimes behaves as a wave and sometimes as a particle. This is due to something we call "wave-particle duality" by which we mean that objects on the quantum sc...
PZ
Answered by Petr Z. • Physics tutor
2616 Views

Calculate the volume of revolution generated by the function, f(x) = (3^x)√x, for the domain x = [0, 1]

First we recall the general formula for the volume of revolution: V = π ∫ [f(x)]² dx Substituting our function, this gives: V = π ∫₀¹ (3^x)² x dx We could write (3^x)² as 3^(2x), or we could notice that this...
RH
Answered by Reece H. • Maths tutor
6282 Views

'Is Economic growth purely beneficial?'

Yes (beneficial): -Increase in GDP, increase in disposable income, increase in standard of living, increase in consumption, increase in AD --> multiplier effect Depends on who experiences the economic gro...
NM
Answered by Naim M. • Economics tutor
2275 Views

How might you distinguish between a primary and secondary alcohol?

Warm and distill with acidified pottasium dichromate. Then test with tollens reagent. The acidified pottasium dichromate will have oxidised the primary alcohol to an aldehyde, which will form a silver mirror...
ZB
Answered by Zoe B. • Chemistry tutor
40363 Views