Speed of trucks= x speed of trains =x-30 A loaded
My equation: 55r + 10,000 - 15r ≥ 55,000
My Answer: r ≥ 1,125
Answer:
56.25π
Step-by-step explanation:
C = πr² = 7.5² π = 56.25π
Answer:
b. 50 degrees
Step-by-step explanation:
Source of magnetic force - Nail
Source electric force - battery cell
<h3>What is an electromagnet?</h3>
We know that the electromagnet is a type of magnet whose magnetic property depends on the interaction of the magnetic material with an electric field. We can see in the image that the nail which serves as the magnetic material is connected to a cell which is the source of the given electric current.
It the follows that the nail above is the source of the magnetic force because the coils of wire while the battery cell is the source of the electrical force.
Learn more about electromagnet:brainly.com/question/3427992
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