Electromagnets can be used to lock doors. how could an engineer increase the strength of an electromagnetic lock? check all that apply
a. by increasing the current through the wire
b. by reversing the current through the electromagnet
c. by adding more coils to the electromagnet
d. by increasing the space between the coils in the electromagnet
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Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.
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Electromagnets can be used to lock doors. how could an engineer increase the strength of an electrom...
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