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Stolb23 [73]
3 years ago
15

What would a scientist most likely do to demonstrate the effects of a tsunami? (2 points) construct tsunami models make underwat

er plates move create actual underwater earthquakes take underwater photographs during a tsunami
Physics
1 answer:
Otrada [13]3 years ago
5 0
Construct tsunami models
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What is (-2)^-3 x (-3)^-2 as a fraction

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If a car is traveling 35 m/s for 200 seconds, how far will the car travel?
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The flux through the coils of a solenoid changes from 2.57.10-5 Wb to 9.44.10-5 Wb in 0.0154 s. If 4.08 V of EMF is generated, h
Vinil7 [7]

Hello!

We can use Faraday's Law of Electromagnetic Induction to solve.

\epsilon = -N \frac{d\Phi_B}{dt}

ε = Induced emf (4.08 V)
N = Number of loops (?)

\Phi_B = Magnetic Flux (Wb)
t = time (s)

**Note: The negative sign can be disregarded for this situation. The sign simply shows how the induced emf OPPOSES the current.

Now, we know that \frac{d\Phi_B}{dt} is analogous to the change in magnetic flux over change in time, or \frac{\Delta \Phi_B}{\Delta t}, so:
\epsilon = N \frac{\Delta \Phi_B}{\Delta t}\\\\\epsilon = N \frac{\Phi_{Bf} - \Phi_{Bi}}{\Delta t}

Rearrange the equation to solve for 'N'.

N = \frac{\epsilon}{ \frac{\Phi_{Bf} - \Phi_{Bi}}{\Delta t}}

Plug in the given values to solve.

N = \frac{4.08}{ \frac{9.44*10^{-5} - 2.57*10^{-5}}{0.0154}}  = 914.585 = \boxed{915 \text{ coils}}

**Rounding up because we cannot have a part of a loop.

4 0
2 years ago
If we increase the amount of work being done, and all other factors remain the same, the amount of power would
BlackZzzverrR [31]
The amount of power would increase
P=W/t
P is directly proportional to W
4 0
4 years ago
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