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

A ball bearing of diameter 5.6 mm is dropped into a liquid which has a viscosity of 5.4 Pa s and a density of 1.38 kgL-1. In the liquid, it reaches a terminal velocity of 0.023 ms-1. Calculate the mass of the ball bearing. g=9.81 Nkg-1

2 / 10


In order to calculate viscous drag (F), the equation above is used. What is a unit for η?

3 / 10

When the temperature increases, what is the effect on fluids' viscosities?

4 / 10

Which diagram is showing laminar flow?

5 / 10

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

6 / 10

Which material on the graph above is the weakest?

7 / 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.

8 / 10

Two springs attached in series extend by 5 cm when a load of F is applied to them. They have different constants of 76 Nm-1 and 31 Nm-1 respectively. Calculate the value of F.

9 / 10

At which point on the graph shown above is the elastic limit?

10 / 10

A spring extends by 12 cm when a mass of 87 g is attached to it. Calculate the spring constant. g = 9.81 ms-2

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