Wei Ming wanted to make a temporary magnet. He then arranged the set up as
shown in the diagram below.
Battery
Switch
Wire
Iron rod
After 30 seconds, he decided to test his temporary magnet by using it to
attract some iron nails. To his disappointment, only 2 iron nails were attracted.
What should Wei Ming do to ensure that his temporary magnet would attract
more iron nails?β
Answers: 3
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Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size
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Wei Ming wanted to make a temporary magnet. He then arranged the set up as
shown in the diagram be...
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