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2 years ago

What's a beam of light?

Physics

1 answer:

nirvana33 [79]2 years ago

4 0

Answer: If you aim a Prisma in the light it will have every color

Explanation:

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Which is more expensive to create coal or solar power

kirill115 [55]

Solar power many be a bit pricey, but it is more efficient than coal and it is better for the environment, coal could be made easily and is cheaper, but Solar power is efficient.
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3 years ago

What are three important details to know about an object's motion? Position, speed, density Speed, acceleration, position Positi

vova2212 [387]

Speed, acceleration, position

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2 years ago

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A 730-keV gamma ray Compton-scatters from an electron. Find the energy of the photon scattered at 120°, the kinetic energy of th

romanna [79]

Answer:

Energy of scattered photon is 232.27 keV.

Kinetic energy of recoil electron is 497.73 keV.

The recoil angle of electron is 13.40°

Explanation:

The energy of scattered photon is given by the relation :

$E_{2}=\frac{E_{1} }{1+(\frac{E_{1} }{m_{e}c^{2} })(1-\cos\theta) }$ .....(1)

Here E₁ is the energy of incident photon, E₂ is the energy of scattered photon, $m_{e}$ is mass of electron and θ is scattered angle.

Substitute 730 keV for E₁, 511 keV for $m_{e}$ and 120° for θ in equation (1).

$E_{2}=\frac{730 }{1+(\frac{730 }{511 })(1-\cos120) }$

E₂ = 232.27 keV

Kinetic energy of recoil electron is given by the relation :

K.E. = E₁ - E₂ = (730 - 232.27 ) keV = 497.73 keV

The recoil angle of electron is given by :

$\cot\phi=(1+\frac{E_{1} }{m_{e}c^{2} })\tan\frac{\theta}{2}$

Substitute the suitable values in above equation.

$\cot\phi=(1+\frac{730 }{511 })\tan\frac{120}{2}$

$\cot\phi=4.20$

$\phi$ = 13.40°

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2 years ago

The fastest airplane in the world can travel 7200 km/hr. How long will it take the plane to go from Los Angeles to London, 8750

12345 [234]

It will take about 1 hour and 12 minutes.

hope this helps!

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2 years ago

Which of the following quantities is inversely proportional to the gravitational pull between two objects?

Contact [7]

Answer:

Explanation:

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces

I hope this helps a little bit

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2 years ago

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What's a beam of light?​

What's a beam of light?