Which action makes use of a magnetic force?
A.
A person puts a bank card in an electronic re...
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Which action makes use of a magnetic force?
A.
A person puts a bank card in an electronic reader to buy an item.
B.
A parent measures a child’s temperature by touching a thermometer to the child’s head.
C.
A store clerk finds the price of an item by moving the item over a laser light.
D.
A student measures the mass of a book using a spring scale.
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