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Anna007 [38]
3 years ago
12

You're caught running a red light on Hwy 316. Attempting to impress the skeptical patrol officer with your physics knowledge, yo

u claim that you were traveling so fast that the red light (685 nm) appeared yellow (590 nm) to you. How fast would you have been traveling (in mi/hr) if that had been the case?
Physics
1 answer:
timurjin [86]3 years ago
3 0

Answer:

Explanation:

We shall apply here Doppler's effect in optics . The formula is as follows

\frac{\triangle\lambda }{\lambda } = \frac{v}{c}

Δλ is change in wavelength , λ is original wavelength , v is velocity and c is velocity of light

Δλ = 685 - 590 = 95 nm

λ = 685

95 / 685 = v / 3 x 10⁸

v = .416 x 10⁸ m / s

= 4.16 x 10⁷ m /s

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The magnitude of the current in wire 3 is (I₃)= 0.33A

<h3>How to calculate the value of the magnitude of the current in wire 3 ?</h3>

To calculate the magnitude of the current in wire 3 we are using the Kirchhoff’s current law,

I₁ + I₂ + I₃ = 0

Where we are given,

I₁ = current in wire 1

=0.40 A.

I₂ = current in wire 2

= -0.73 A.

We have to calculate the magnitude of the current in wire 3, I₃

Now we put the known values in above equation, we get,

I₁ + I₂ + I₃ = 0

Or, I₃ = -.(I₁ + I₂)

Or, I₃ = -.(0.40 - 0.73)

Or, I₃ = 0.33 A

From the above calculation, we can conclude that the current in wire 3 is  I₃ = 0.33 A

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1 year ago
70 POINTS AND BRAINLIEST PLEASE HELP!!!The Moon orbits Earth. This orbit causes the Moon to look different over the course of ab
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Answer:

It always acurs after a 1st quarter

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Explanation:

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3 years ago
A zebra starts from rest and accelerates at 1.9 m/s how far has a zebra gone in five seconds
Maksim231197 [3]
To that multiply 1.9 by 5 to get 9.5.  The zebra has gone 9.5 m.
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A truck is using a hook to tow a car whose mass is one quarter that of the truck. If the force exerted by the truck on the car i
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Answer:

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Explanation:

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The relationship between m2,cm2,mm2 and km2​
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Answer:

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Explanation:

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