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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
2749 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
6458 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
2406 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
41304 Views

Express Cosx-3Sinx in form Rcos(x+a) and show that cosx-3sinx=4 has no solution MEI OCR June 2016 C4

Cosx-3sinx =R(CosxCosa-SinxSina) 1=Rcosa R^2=1^2+3^2 r=(10)^0.5=(approx)3.16 a=1.249 3.16Cos(x+1.249)=4 has no solution as 4<3.16 so as cos(theta) has maximum value of 1, there are no solutions
JP
Answered by Jakub P. • Maths tutor
5794 Views