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
lina2011 [118]
3 years ago
12

How is photon energy calculated? (choose 2)

Physics
2 answers:
Lady_Fox [76]3 years ago
3 0

Answer:

Explanation:

Based on the wave model of light, physicists predicted that increasing light amplitude would increase the kinetic energy of emitted photoelectrons, while increasing the frequency would increase measured current.

Contrary to the predictions, experiments showed that increasing the light frequency increased the kinetic energy of the photoelectrons, and increasing the light amplitude increased the current.

Based on these findings, Einstein proposed that light behaved like a stream of particles called photons with an energy of \text{E}=h\nuE=hνstart text, E, end text, equals, h, \nu.

The work function, \PhiΦ\Phi, is the minimum amount of energy required to induce photoemission of electrons from a metal surface, and the value of \PhiΦ\Phi depends on the metal.

The energy of the incident photon must be equal to the sum of the metal's work function and the photoelectron kinetic energy:

Vsevolod [243]3 years ago
3 0
Using plank’s constant
You might be interested in
A car with a mass of 1,500 kg is accelerating at a rate of
AURORKA [14]

Answer:

The net force acting on the car is

3

×

10

3

Newtons.

Hope this helps you

Explanation:

Force is defined as the product of the mass of the body and its aaceleration,

⇒

F

=

m

a

Substituting the above given values we get,

F

=

(

1500

k

g

)

(

2.0

m

/

s

2

)

=

3000

N

=

3

×

10

3

N

.

4 0
2 years ago
Why is it warmer near the equator than near the poles?
maw [93]
The equator is warmer than the poles because the equator is closer to the sun. In other words, the sun is overhead the equator, which is a result of the Earth's curvature. 
3 0
2 years ago
The gravitational force of attraction between two objects would increase by
OleMash [197]
The gravitational force of attraction between two objects would be increased by "decreasing the distance between two objects"

Hope this helps!
6 0
3 years ago
The acceleration due to gravity on Jupiter is greater than that on Earth. On Jupiter, a person will weigh ______.
soldier1979 [14.2K]
A person will weigh more

5 0
2 years ago
Read 2 more answers
Will give brainliest to correct answer.
Darina [25.2K]

Answer:

1.5X10^-4C

Explanation:

Expression for the electric force between the two charges is given by -

F = (k*q1*q2) / r^2

Here, k = constant = 9 x 10^9 N*m^2 / C^2

q1 = unknown

F=25N

q2 = 1.9x10^-6 C

r = 0.32 m

Substitute the given values in the above expression -

25=9x10^9 *(q1) * 1.9 x10^ -6/ (0.32m)^2

25= 17,100* (q1)/ 0.1024

multiply both sides by 0.1024 to get rid of the denominator

2.56=17,100*(q1)

Divide both sides by 17,100 to isolate q1

q1=1.5x10^-4C

4 0
3 years ago
Other questions:
  • How long did Skylab orbit the earth?
    14·1 answer
  • What molecular geometry would be expected for f2 and hf?
    8·1 answer
  • What must occur before clouds can form?
    14·2 answers
  • Which solid is the best thermal insulator
    15·1 answer
  • How can a person detect infrared rays without an instrument?
    14·2 answers
  • The importance of latitude and longitude
    8·1 answer
  • When the IMA is compared to AMA in the real world, _____.
    12·2 answers
  • The photo shows a toy spring. What kind of energy does the toy have because of its shape?
    5·2 answers
  • How does inertia explain why it is difficult to stop a moving<br> skateboard?
    10·1 answer
  • To which end of the horseshoe magnet will the north end of the magnet be attracted
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!