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
ArbitrLikvidat [17]
3 years ago
15

When light is directed on a metal surface, the kinetic energies of the photoelectrons a) are random b) vary with the frequency o

f the light c) vary with the intensity of the light d) vary with the speed of the light
Physics
1 answer:
jekas [21]3 years ago
5 0

Answer:

b) vary with the frequency of the light

Explanation:

The phone electric effect can be expressed as

K.E=(hv -W•)

Where K.E is the Kinectic energy

W• = work function of the metal

ν =frequency of the radiation

h = Planck's constat

Then, we can see that K.E is proportional linearly to "v" in the equation above.

Therefore, When light is directed on a metal surface, the kinetic energies of the photoelectrons vary with the frequency of the light

You might be interested in
2
kakasveta [241]

Answer:

A

Explanation:

As the interest rate goes up, your payments and the total repayment amount could increase. On the other hand, if the interest rate happens to drop, you may save money overall and pay less.

4 0
4 years ago
HELP ASAPPP which statement explains the first law of thermodynamics a)energy is created and destroyed or b) energy is transform
Aliun [14]
B I believe... :) good luck!
7 0
4 years ago
Read 2 more answers
What is the main function of b-cells?
RoseWind [281]

Answer: They create antibodies.

7 0
3 years ago
A satellite is orbiting earth at a distance of 35.0 kilometers. The satellite has a mass of 500 kilograms. What is the force bet
Alika [10]

Answer:

F = 4856.32 N

Explanation:

Given,

A satellite is orbiting earth at a distance from Earth surface, h = 35000 m

The mass of the satellite, m = 500 Kg

The radius of the Earth, R = 6.371 x 10⁶ m

The mass of the Earth, M = 5.972 x 10²⁴ Kg

The gravitational constant, G = 6.67408 x 10 ⁻¹¹ m³ kg⁻¹ s⁻²

The force between the Earth and the satellite is given by the formula

                                    F = GMm/(R+h)²  N

Substituting the values in the above equation

        F = (6.67408 x 10 ⁻¹¹ X 5.972 x 10²⁴ X 500) / (6.371 x 10⁶ + 35000)²

                                        = 4856.32 N

Hence,  the force between the planet and the satellite is, F = 4856.32 N

5 0
3 years ago
How dense the medium is in the compression part of the wave, and how
ivolga24 [154]
How dense the medium is in the compression part of the wave and how rare the medium is in the rarefaction part of the wave is a measure of the longitudinal wave's amplitude.
4 0
3 years ago
Other questions:
  • A railroad hopper car filled with sand is rolling with an initial speed of 15.0 m/s on straight horizontal tracks. Ignore fricti
    10·1 answer
  • What's the answer to this question?​
    15·1 answer
  • What is one difference between water and ice?
    8·2 answers
  • The speed of an aircraft in still air is 300 km/h. The wind velocity is 60 km/h from
    13·1 answer
  • A crate attached to a spring is being pulled across a flat frictionless surface. The spring is stretched 0.82 m, the crate is ac
    7·1 answer
  • Help!!! I need the order abcde
    14·1 answer
  • Why are we not able to see immediate after we enter a dark hall from a lighter place.
    11·1 answer
  • Differentiate between earthworm and housefly​
    11·1 answer
  • Suppose 550 g of water at 32 degrees * C is poured into a 210 - g aluminum can with an initial temperature of 15 degrees * C . F
    6·1 answer
  • A certain sprinter has a top speed of 11.3 m/s. If the sprinter starts from rest and accelerates at a constant rate, he is able
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!