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Pie
3 years ago
9

Superman's laser eyes have a wavelength of 6.4*10^-12, how much energy do those eyes release?

Physics
1 answer:
likoan [24]3 years ago
5 0

quite a lot :0

I hope this helps, and keep some kryptonite on hand dude!

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Electrons in a particle beam each have a kinetic energy of 4.0 × 10 −17 J. What is the magnitude of the electric field that will
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Answer:

-833.3 N/C

Explanation:

Kinetic energy, K, in terms of electric field, E, is given as:

K = qEr

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r = distance = 0.3m

The electric field can be gotten by making E subject of formula:

E = K/(qr)

The electeic field needed to stop the electrons must be equal in magnitude to the electric field carried by these electrons:

E = (4.0 × 10⁻¹⁷)/(-1.6 × 10⁻¹⁹ * 0.3)

E = -833.3 N/C

This is the electric field needed to stop the electrons.

The negative sign means that the electric field must be in a direction opposite to the motion of the electrons.

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3 years ago
A wire must be replaced in a circuit by a new wire of the same material but nine times longer. If the new wire's resistance is t
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Answer:

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3 years ago
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Me: Hope this helps!!! May I have brainlist!?

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A grindstone in the shape of a solid disk with a diameter of 1.0 m and a mass of 50.0 kg, is rotating at 900 rev/min. A tool is
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Answer:

oh for real?

Explanation:

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