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A student has a mass of 80kg. How much would the student weigh on the surface of the Moon?

The Moon has a mass, MM = 7.35 x 1022kgThe Moon has a radius, RM = 1.74 x 10m
We want to determine the gravitational constant for the Moon's surface to then calculat...

GB
Answered by Guy B. Physics tutor
2557 Views

Butan-2-ol cannot be directly converted to 1,2-dibromobutane. The conversion can be carried out in two stages by first converting butan-2-ol into X, which is then reacted with bromine.(continued in answers)

butan-2-ol --?→ X --Br2→ 1,2-dibromobutane(a) State the name and draw the structural formula of X(b) State an equation and the conditions needed for the conversion of butan-2-ol into X.(c) Desc...

KT
Answered by Kiril T. Chemistry tutor
6338 Views

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
9691 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
4279 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
2437 Views

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