1. An empty drum weighs 1.035 kg and when filled with benzene it weighs 5.418kg. If the density of benzene is 0.8766 g/mL, calculate the volume of benzene in the drum. Be sure to consider the units and significant figures.
2. Can the terms ‘mass' and ‘weight' be used interchangeably - explain.
3. In the following table, match the type of force listed with a relevant description.
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Type of force
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Matches with
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Description - cause of force
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a) compression
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f) rubbing your hand on carpet
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b) gravity
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g) a piece of paper falling to the ground
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c) friction
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h) a picture hanging on a wall
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d) tension
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i) a tight bandage around a swollen ankle
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e) shear
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j) two people pulling on either end of a rope
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4. a) Explain what is meant by the terms hydrostatic pressure and hydrodynamic pressure?
b) Which of these terms can be used when discussing cardiac output?
5. In the following table match the ‘term used to describe lever action' with the relevant human body part used when a nurse lifts a patient.
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Term used to describe lever action
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Matches with
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Human body part used to lift patient
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a) fulcrum
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e) the bones in the forearm
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b) effort force
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f) patient
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c) load force
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g) elbow joint
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d) lever
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h) work by muscles
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6. Consider the following wave diagram
7. Perform the calculation of the two wave characteristics that you selected in question 7 and explain why it is not possible to calculate the third.
8. What is the difference between longitudinal and transverse waves, provide an example of each.
9. Explain why sound waves cannot travel in a vacuum but light can.
10. Complete the following regarding the application of sound waves in medical science.
a) What type of medical imaging uses sound waves?
b) Explain how this form of imaging works.
11. The most harmful of the three common types of nuclear radiation is the
a) alpha particle.
b) beta particle.
c) gamma ray.
d) All have the same penetrating ability.
12. Explain what is meant by the term ‘half-life of a radioactive substance'.
13. Please complete the following questions about nuclear radiation.
a) Discuss four vital factors that should be used in minimising the effects of radiation.
b) What is most effective shielding that can be used for protection from the following radiation types?
• alpha particles
• beta particles
• gamma rays
14. A radioactive isotope, used in the agricultural industry has a half life of 8 days. On application, the radiation is emitted is measured at 12500 counts per sec (cps). If the area that it is applied to cannot be used until the radiation strength is less than 50 cps how long will it take before the site can be used again?