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In an electric propulsion system, alpha particles are accelerated through a potential difference of 100kV at an average rate of 10^20 alpha particles per second. Calculate the average thrust the system can provide.

Take the mass of alpha particle to be 6.6410^-27 kg accurate to 3 s.f. Note that the the work done in an electric field accross a potential difference is E = QV, where Q is the total charge of the alp...

AA
Answered by Alexandru A. Physics tutor
3114 Views

How do I use my own knowledge in a Section A source analysis question?

You should use your own knowledge (OK) about the question as a lens through which to analyse the four sources. Instead of simply deploying OK to answer the question directly, use it to examine the provena...

AN
Answered by Alexander N. History tutor
6432 Views

Show, by first principles, that the differential of x^2 is 2x.

First I would draw a Diagram of y=x2 on the x and y plane, for x>0. Then label a generic point as (x,y), then noting that as y=x2 we can then equate the sane point to (x, x2...

KJ
Answered by Kieren J. Maths tutor
3455 Views

Describe the multi-store memory model. (4 marks)

The multi-store memory model was proposed by Atkinson and Shiffrin (1968) and suggests that memory consists of three stores; the sensory register, the short term memory (STM) and the long term memory (LTM...

DB
Answered by Dan B. Psychology tutor
10756 Views

Find the stationary points of the function f(x) = x^3+6x^2+2 and determine if they are local maximums or minimums.

A stationary point is defined as a point on the function where the gradient is zero, i.e f'(x) = 0. To construct this equation we must differentiate the function, we would find f'...

LS
Answered by Luke S. Maths tutor
5250 Views

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