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An engineering student found that the Youngs modulus of an alloy was 2.8 x 10^11 Pa. The 1.5m wire of the allow increased in length by 0.24% during an experiment. Calculate the stress on the wire.

The Youngs modulus of a material is = Stress / Strain. Therefore, the stress of an object is the strain multiplied by the Youngs modulus. We know that strain is the change in length (or extension) divided by...
DT
Answered by David T. • Physics tutor
4282 Views

What are the policy reasons for imposing strict liability in vicarious liability cases?

Robert Stevens identifies four main policy reasons for this strict liability. First, to encourage an employer to be more careful; second, that an employer will have 'deeper pockets' i.e more money to pay com...
RL
Answered by Rose L. • Law tutor
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‘Social class remains the main determinant of voting behaviour in the UK.’ Discuss

When looking at longer, essay style questions such as these, often the differences between an average grade, and getting into those top boundaries, lies in answering the question in a specific manner, such a...
MH
6261 Views

Expand and simplify (x+6)(x+4)

Answer: x 2 +10x+24 Method: A handy way of knowing how to expand brackets involves the pneumonic FOIL: - F stands for First, so we multiply the first term in the first bracket by the first term in the second...
EM
Answered by Emma M. • Maths tutor
26324 Views

Describe the processes and forces that allow water movement up a plant stem.

Water moves into the plant stem from the soil, and up to the leaves via the xylem. Water is taken up by the hairs on the root of the plant down the water potential gradient via osmosis, following the active ...
HC
Answered by Hannah C. • Biology tutor
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