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Natalka [10]
3 years ago
13

When grocery shopping, the mass of the cart changes as you start to fill up your cart. How does the change in mass of your cart

change the force you apply to the cart?
Group of answer choices
a. The force will need to increase

b. The force will need to decrease

c. The force does not need to change
Physics
1 answer:
Tasya [4]3 years ago
4 0

Answer:

b

Explanation:

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Answer:

D. only briefly while being connected or disconnected.

Explanation:

As we know that transformer works on the principle of mutual inductance

here we know that as per the principle of mutual inductance when flux linked with the primary coil charges then it will induce EMF in secondary coil

So here when AC source is connected with primary coil then it will give output across secondary coil because AC source will have change in flux with time.

Now when we connect DC source across primary coil then it will not induce any EMF across secondary coil because DC source is a constant voltage source in which flux will remain constant always

So here in DC source the EMF will only induce at the time of connection or disconnection when flux will change in it while rest of the time it will give ZERO output

so correct answer will be

D. only briefly while being connected or disconnected.

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