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Chapter: 19 / Q: 44
What is the best defi nition of the WEIGHT of an object? Weight is the:
Chapter: 19 / Q: 45
What is the meaning of ‘work’ in the scientifi c sense?
Chapter: 19 / Q: 46
In which of the following cases is the greatest amount of work being done on the object that is experiencing the force?
Chapter: 19 / Q: 47
What may be said about the measurable quantities which are referred to as vectors?
Chapter: 19 / Q: 48
In the schematic diagram of an arm being a lever, rod 1 represents the humerus and rod 2 the radius and ulna. M is a block being supported by the ‘hand’. What are located at the positions indicated by p, q, r and s?
Chapter: 19 / Q: 49
When the biceps brachii muscle fl exes the forearm, what is the forearm an example of?
Chapter: 19 / Q: 50
Why are the third class lever systems of the human musculoskeletal system ineffi cient? Because
Chapter: 19 / Q: 51
Many of the muscle-bone combinations in the body behave as third-class levers. Why do these require a muscle tension (the effort force) much greater than the load’s force?
Chapter: 19 / Q: 52
What is the aim of ‘correct lifting technique’? To
Chapter: 19 / Q: 53
Which of the following is NOT considered part of good lifting technique?
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