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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
2774 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
5959 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
3136 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
9441 Views

How did Tsar Nicholas II survive the 1905 Revolution? (6 marks)

The 1905 Revolution shook Tsar Nicholas' power, yet he survived the rebellion by using using two main strategies. Firstly, Nicholas conceded some degree of power to the Russian Parliament, known as the Du...

DB
Answered by Dan B. History tutor
30002 Views

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