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vesna_86 [32]
3 years ago
12

An electromagnet is created using a battery, an insulated copper wire and an iron nail. The wire is wrapped around the nail 20 t

imes and attached to the battery. Which pair of changes will definitely increase the strength of the electromagnet?
Physics
1 answer:
Molodets [167]3 years ago
4 0
I think adding more loops would strengthen it
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The pressure will 14. 0 g of co exert in a 3. 5 l container at 75°c is 4.1atm.

Therefore, option A is correct option.

Given,

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