1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marta_Voda [28]
3 years ago
7

A photon of wavelength 3.7 nm Compton scatters from an electron at an angle of 90°. What is the modified wavelength? (Enter your

answer correct to 5 significant figures.)

Physics
2 answers:
viva [34]3 years ago
7 0

Answer:

3.70242 nm

Explanation:

Using Compton effect formula

Δλ = ( h / mec) ( 1 - cosθ)

where h is planck constant = 6.62607 × 10 ⁻³⁴ m²kg/s

me, mass of an electron = 9.11 × 10⁻³¹ kg

c is the speed of light = 3 × 10⁸ m/s

Δλ = 6.62607 × 10 ⁻³⁴ m²kg/s / (9.11 × 10⁻³¹ kg × 3 × 10⁸ m/s ) ( 1 - cos 90°) =   0.242 × 10 ⁻¹¹ m = 2.42 × 10⁻¹² m  = 0.00242 nm

modified wavelength = 3.7 nm + 0.00242 nm = 3.70242 nm

denis-greek [22]3 years ago
7 0

Answer: 3.7024nm

Explanation:

in the attachment

You might be interested in
A ball falls from the top of a building. As it falls, its speed increases. Which type of energy is the ball gaining as it falls?
Elina [12.6K]
<h2>Hello!</h2>

The answer is: B. Kinetic energy

<h2>Why?</h2>

Since the ball is falling, speed increases because the gravity acceleration is acting. When speed increases, the kinetic energy increases too, so the ball is gaining kinetic energy.

The gravity acceleration is equal to 9.81\frac{m}{s^{2}}, it means that when falling, the ball will increase it's speed 9.81m every second.

We can calculate the kinetic energy by using the following formula:

KE=\frac{1}{2}*m*v^{2}

Where:

m=mass\\v=velocity

Have a nice day!

<h2 />
5 0
3 years ago
What is the displacement for the couple's hiking trip? Give your answer as an ordered pair, with magnitude first, followed by a
nekit [7.7K]

Answer:

Explanation:

See the attached

7 0
3 years ago
Read 2 more answers
A star’s light is alternately shifted from the blue part of the light spectrum to the red part.
g100num [7]
The answer is A because it is an example of red shift which if basically the Doppler effect , but for light. The wavelength gets longer because it has visible light has shifted into the red end of the spectrum, showing that it has a shorter frequency with a longer wavelength; meaning it is moving away from us
4 0
3 years ago
Suppose you look at the huge clock on the Big Ben Tower in London and it reads 12 noon. If you could travel away from the clock
spin [16.1K]

Answer:

Option C. be frozen at 12 noon

Explanation:

This can be explained by the special theory of relativity according to which at greater speeds time slows down and length contracts in the direction of motion.

Also if a body travels at the speed of light time will stop and the body will will reduce to zero length.

Therefore, for the given case time will freeze at 12 noon.

7 0
3 years ago
a cruise took 6 hours to fulfill its trip it travelled at an average speed of 160 km/h for thefirst 2 h 15 min
soldi70 [24.7K]

Answer: 1035

Explanation:

6 0
3 years ago
Other questions:
  • One’s behavior cannot be affected by one’s subconscious
    13·2 answers
  • In astronomy, the term perihelion refers to the point in the orbit of an asteroid, comet, or planet when it is closest to the su
    15·1 answer
  • A closed box with square base is to be built to house an ant colony. the bottom of the box and all four sides are to be made of
    13·1 answer
  • A ball attached to a string is whirled around in a horizontal circle having a radius r. If the radius of the circle is changed t
    12·1 answer
  • There is a current I flowing in a clockwise direction in a square loop of wire that is in the plane of the paper. If the magneti
    15·1 answer
  • What is an intraplate quake? What causes them?
    6·1 answer
  • 10. Explain the principle of electric motor. Write its uses.
    12·1 answer
  • 023 (part 1 of 2) 10.0 points
    8·1 answer
  • Why the unit of power is called derived unit? <br>​
    15·1 answer
  • Sound is capable of travelling in which medium or media ?<br><img src="https://tex.z-dn.net/?f=%20%5C%5C%20" id="TexFormula1" ti
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!