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Alex_Xolod [135]
2 years ago
15

Which property does not apply to a motor? A. It uses an electromagnet. B. The direction of current changes twice during the rota

tion of the coil. C. It converts electrical energy into mechanical energy. D. It converts mechanical energy into electrical energy. E. It uses an outside source of electrical c
Physics
2 answers:
vitfil [10]2 years ago
5 0

Answer:

D. It converts mechanical energy into electrical energy.

Explanation:

Ok lets disregard the whole "oh yay physics explainations" and look at this with just a little common sense and use some elimination and logic.

C and D are pretty similar so just look at those two.

C. It converts electrical energy into mechanical energy.

D. It converts mechanical energy into electrical energy.

Think about what a motor is in something like a fan. How is it powered? ELECTRICITY! So it must convert electricity to mechnical neergy so therefore D must be incorrect.

Rufina [12.5K]2 years ago
3 0

Answer:  

     

Explanation:

A motor converts electrical energy to mechanical energy. A current carrying coil is placed between electromagnets. A magnetic force is exerted on the coil which makes it rotate. The direction of current changes twice during the rotation of the coil. An outside source of electric current is used.

Thus, the wrong statement is D. It converts mechanical energy into electrical energy. It is the generator which converts mechanical energy into electrical energy.

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Answer:

The answer is 4N or B

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We have W = 8 J and D = 2 m using algebra ....

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6 0
3 years ago
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Match the measurements to the correct number of significant figures.
Shalnov [3]
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1.  Count ALL nonzero numbers
2.  If the zero is between 2 numbers, count it
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2 years ago
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Hello, why do all electromagnetic waves travel at the same speed in vacuum?
Viktor [21]

Answer:

due to the magnetic field

Explanation:

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6 0
3 years ago
If the speed of sound in air is 343 m/s and the wavelength of this note is 2.62 m, what is the frequency of this C3 note? (Round
snow_lady [41]

Answer:

<em>The frequency of of the note = 131 Hz.</em>

Explanation:

<em>Frequency:</em><em> Frequency can be defined as the number of complete oscillation completed by a wave in one seconds. The S.I unit of frequency is Hertz ( Hz)</em>

v = λf ............................ Equation 1

Making f the subject of the equation,

f = v/λ .......................... Equation 2

Where v = Speed, λ = wavelength, f = frequency

<em>Given: v = 343 m/s, λ = 2.62 m.</em>

<em>Substituting these values into equation 2</em>

<em>f = 343/2.62</em>

<em>f = 131 Hz</em>

<em>Thus the frequency of of the note = 131 Hz.</em>

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If you are in a car and your sibling is driving in the same car next to you at the same speed, does your brother appear to be mo
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