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sleet_krkn [62]
4 years ago
7

Which best explains why no current is induced? The wire needs to be coiled less tightly. The wire needs to be straight, not coil

ed. The magnet needs to be moved through the coils of wire. The magnet needs to be held above the coils of wire.
Physics
2 answers:
Leto [7]4 years ago
8 0

Answer : The magnet needs to be moved through the coils of wire.

Explanation : When the moves magnet towards the coil or coil towards the magnet then the change the flux and induced emf and induced current in the coil.

So, we can say that the magnet needs to be moved through the coils of wire that's why no current is induced in the coil.

Ann [662]4 years ago
7 0
The magnet needs to be held above the coils of wires

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A cell phone company relies on which kind of waves in order to provide service for its customers? ultraviolet waves infrared wav
Greeley [361]

Answer:

microwaves

Explanation:

Electromagnetic waves consist of waves of different wavelengths. Among the choices given, waves are ordered for increasing wavelengths as follows:

gamma rays --> ultraviolet waves --> infrared waves --> microwaves

So, microwaves are the waves with the longer wavelength among the given choices. This is the reason why they are used by the cell phone companies: in fact, since they have longer wavelengths, microwaves can travel longer distances without being absorbed by objects or obstacles, and so they are more reliable for broadcasting and telecommunications.

6 0
3 years ago
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What does the principle of superposition help scientists determine?
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Answer:

B

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the exact and absolute age of a rock layer

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PLEASE HELP!!!<br><br> Both Transverse and Longitudinal Waves transmit _______ and not ______.
qwelly [4]
I believe this is it

6 0
3 years ago
A student uses a spring with a spring constant of 130 N/m in his projectile apparatus. When 56 J of
Triss [41]

Explanation:

potentional \: energy \:  =  \frac{1}{2} k {x}^{2}  \\ 56 =  \frac{1}{2}  \times 130 \times  {x}^{2}  \\  {x}^{2}  =  \frac{56}{65}  \\ x =  \sqrt{ \frac{56}{65} } meter

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4 0
3 years ago
The magnetic field at the earth's surface can vary in response to solar activity. During one intense solar storm, the vertical c
Natalka [10]

Answer:

EMF = 1684.67 Volts

Explanation:

As we know that EMF is induced in a closed conducting loop if the flux linked with the loop is changing with time

So we can say

EMF = \frac{d\phi}{dt}

now we have

\phi = BA

here since magnetic field is constant so we have

EMF = A\frac{dB}{dt}

now we have

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6 0
3 years ago
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