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Electrons moving in a beam have the same de Broglie wavelength as protons in a separate beam moving at a speed of 2.8 × 10^4 m/s . What is the speed of the electrons?

de Broglie wavelength formula:
λ = h/mv,
whereλ = wavelength,h = Planck's Constant = 6.626 x 10-34 Js,m = mass of object,v = object's velocity,
Mass of proton mp = 1.6...

HA
Answered by Haider A. Physics tutor
9110 Views

Find the general solution of the equation tan(2x + pi/2) = SQRT(3), giving your answer for x in terms of π in a simplified form.

Assume y = 2x + pi/2,
Since the period of 'tangent' is pi, the general solution of 'y' to valid the equation of tan(y) = SQRT(3) is the form of y = npi+pi/3 where 'n' is any positive or negative...

CH
Answered by Chunlong H. Maths tutor
3859 Views

How do you write "Evaluate the usefulness of the source" questions?

This is a 6 mark question, which I answer using an anagram which helps you to remember each of the points you need to include to achieve full marks. The anagram I use is: TACL which stands for Time, Autho...

EL
Answered by Emma L. History tutor
2217 Views

How do you assess the validity of a historical source?

A good acronym to remember when assessing sources is DAMIT. D = Date: When was the source produced? Did any major historical events take place around this date? Is the source typical of the time? How long...

GF
Answered by Georgia F. History tutor
8694 Views

Should I only exhibit my academic excellence in my personal statement?

Universities are obviously interested in getting students with a great academic potential to improve their reputation. However, they are not only interested in recruiting thinking machines. A teacher will...

MD
1808 Views

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