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choli [55]
3 years ago
7

What is the relationship between a magnetic field and a magnetic force?

Physics
1 answer:
Lunna [17]3 years ago
8 0
I believe the answer to your question is D. A magnetic force is the effect felt by a magnetic object in a magnetic field. 
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The blank approach emphasizes the scientific study of observable actions and/or responses and their environmental determinants
lakkis [162]

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"behavioral" is the right answer.

Explanation:

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3 years ago
When a car's starter is in use, it draws a large current. The car's lights draw much less current. As a certain car is starting,
ad-work [718]

Answer:

EMF = 11.35 V

R = 0.031Ω

Explanation:

To find the battery's EMF and the internal resistance we need to use Ohm's law:

V = IR

Where:

V: is the voltage

I: is the current

R is the resistance

We have:

The current through the battery is 64.2 A and the potential difference across the battery terminals is 9.36 V:

\epsilon = V + IR      

\epsilon = 9.36 V + 64.2A*R   (1)

When only the car's lights are used, the current through the battery is 1.96 A and the terminal potential difference is 11.3 V:

\epsilon = 11.3 V + 1.96A*R   (2)

By solving equation (1) and (2) for R we have:

9.36 V + 64.2A*R = 11.3 V + 1.96A*R

R = \frac{1.94 V}{62.24A} = 0.031 \Omega

Hence, the internal resistance is 0.031 Ω.

Now, by entering R into equation (1) we can find the battery's EMF:

\epsilon = 9.36 V + 64.2A*0.031 \Omega

\epsilon = 11.35 V

Therefore, the battery's EMF is 11.35 V.

I hope it helps you!                

8 0
4 years ago
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