Materials Random Retrieval

1

Materials Random Retrieval

This quiz contains all the questions in the Materials section. The website will pick 10 questions at random.

1 / 10

Which material is the densest?

2 / 10

Stress and strain are used to calculate the Young's modulus of a material up to its _____________.

3 / 10

The Young's Modulus for a single walled carbon fibre nanotubes of diameter 4 nm is 1000 GPa. If it is placed under 75% strain, what force is required to break it?

4 / 10

A material has a stress of 6x108 Nm-2 and is placed under a 5% strain. Calculate the value for the materials Young's modulus.

5 / 10

A new material is developed and the research team want to know the amount of elastic strain energy it can store. They test the material multiple times and plot a graph with the averages. Estimate from the graph the elastic strain energy that is stored in the wire up to the limit of proportionality.

6 / 10

A copper wire has a length of 25 cm and a force of 400 N is applied to the wire, which causes it to stretch to 28.9 cm. Calculate the elastic strain energy stored in the wire.

7 / 10

A wire of 1.2 m extends a 3 mm when a load of 20 N is applied to it. Calculate it's strain.

8 / 10

When plotting a force extension graph for the loading and unloading of a material, when would the unloading line not pass through the origin?

9 / 10

What is the relationship between the force applied, F, and the extension, x of a material that obeys Hooke's Law?

10 / 10

If the deformation of the material is plastic, the material __________.

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