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
ohaa [14]
3 years ago
12

An atom in the ground state has a collision with an electron, then emits a photon with a wavelength of 1240 nm. What conclusion

can you draw about the initial kinetic energy of the electron

Physics
1 answer:
anyanavicka [17]3 years ago
6 0

Answer:

attached below is the free body diagram of the missing  illustration

Initial kinetic energy of the electron = 3 eV

Explanation:

The conclusion that can be drawn about the kinetic energy of the electron is

E_{e} = E_{3}  - E_{1}

E_{e} = initial kinetic energy of the electron

E_{1} = -4 eV

E_{3} = -1 eV

insert the values into the equation above

E_{e} = -1 -(-4)  eV

   = -1 + 4 = 3 eV

You might be interested in
How is velocity different from speed?
enyata [817]

Velocity, unlike speed, includes a direction.

Velocity is a vector quantity which is defined by magnitude and direction.

Speed is a scalar quantity. It is the rate at which an object moves regardless of which direction.

5 0
2 years ago
Read 2 more answers
Write the following as powers of ten with one figure before the decimal point:
vodka [1.7K]
........................z......
5 0
2 years ago
A ___ is when too much water moves into an area
Marina86 [1]
A. Flood.
Hope it helps!
6 0
3 years ago
Read 2 more answers
The magnet has an unchanging magnetic field: very strong near the magnet, and weak far from the magnet. How did the magnetic fie
STatiana [176]

Answer:

<em>The magnetic field through the coil at first increases steadily up to its maximum value, and then decreases gradually to its minimum value.</em>

<em></em>

Explanation:

At first, the magnet fall towards the coils;  inducing a gradually increasing magnetic field through the coil as it falls into the coil. At the instance when half the magnet coincides with the coil, the magnetic field magnitude on the coil is at its maximum value. When the magnet falls pass the coil towards the floor, the magnetic field then starts to decrease gradually from a strong magnitude to a weak magnitude.

This action creates a changing magnetic flux around the coil. The result is that an induced current is induced in the coil, and the induced current in the coil will flow in such a way as to oppose the action of the falling magnet. This is based on lenz law that states that the induced current acts in such a way as to oppose the motion or the action that produces it.

3 0
3 years ago
In the first direct detection of gravitational waves by LIGO in 2015, the waves came from A. the collapse of a nearby star into
diamong [38]

In the first direct detection of gravitational waves by LIGO in 2015, the waves came from the merger of two black holes. Option B is correct. This is further explained below.

<h3>What are gravitational waves?</h3>

A gravitational wave is simply defined as a ripple in space that is unseen though extremely rapid. Gravitational waves move at light speed. As they pass past, these waves compress and stretch everything in their path.

In conclusion, the merger of two black holes is the first direct detection of gravitational waves.

Read more about Wave

brainly.com/question/23271222

#SPJ1

8 0
2 years ago
Other questions:
  • In a scale model solar system that used a grapefruit to represent the Sun, how far away should you put another grapefruit to rep
    14·1 answer
  • A 70 kg man is walking at a speed of 2 m/s. What is his Kinetic Energy?
    12·2 answers
  • How much resistance is required to limit the current to 1.5 mA if the potential drop across the resistor is 6V
    8·1 answer
  • Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. How far will the foot
    7·2 answers
  • What evidence is there that the universe is expanding?
    12·2 answers
  • Two straight wires carry current of 5A opposite direction separated by a distance of 30cm. What is the magnitude of magnetic fie
    11·1 answer
  • A Ray of light in air makes an angle of 45 degree at the surface of a sheet of ice . the ray is refracted within the Ice at an a
    9·1 answer
  • You hold your physics textbook in your hand. (Assume that no other objects are in contact with the book.)
    10·1 answer
  • Michael has a substance that he puts in Container 1. The substance has a volume of 5 cubic meters. He then puts the substance in
    14·1 answer
  • A jet of water squirts out horizontally from
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!