3 years ago

Choose all the answers that apply.

1 answer:

8 0

<span>According to Newton's first law of motion:

-- objects at rest will remain at rest unless acted upon by an outside force

-- objects in motion will remain in motion unless acted upon by an outside force

</span>

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A large magnetic flux change through a coil must induce a greater emf in the coil than a small flux change. A) True B) False

bixtya [17]

Answer:

False

Explanation:

Faraday's law gives the relationship between the induced emf and the rate of change of magnetic flux i.e.

$\epsilon=\dfrac{-d\phi}{dt}$

The given statement "A large magnetic flux change through a coil must induce a greater emf in the coil than a small flux change" is false. The reason is that if the rate of change of magnetic flux is greater, then its will induce more emf. It would mean it does not say about emf.

Hence, it is false.

3 0

4 years ago

Melanie completes a long distance run at an average speed of 6 mph. If it takes her 3 hours, how far did she run?

Rama09 [41]

Answer:

18 miles

Explanation:

The average speed is 6 mph

Melanie ran for 3 hours

Speed × Time = Distance

So, 6 mph × 3 h = 18 miles

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3 years ago

A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to

katovenus [111]

The correct answer should be c.The kinetic energy of the water molecules decreases.

If the temperature drops that means that the molecules are coming together. If the temperature rises then it means that the molecules are spreading. If the kinetic energy falls down that means that they are slower which means that they are cooler.

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3 years ago

Read 2 more answers

As speed (velocity) increases, potential energy increases true or false

Lyrx [107]

Answer:

true

Explanation:

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3 years ago

You wanted to use your electric grill in your backyard. You need an extension cord. What will be the requirement of your extensi

Troyanec [42]