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
Alika [10]
4 years ago
7

A photosensitive surface is illuminated with both blue and violet light. the light that will cause more electrons to be ejected

is the
Physics
1 answer:
Vikki [24]4 years ago
8 0
The correct answer is "they cause the same number of electrons to be ejected".

In fact, in the photoelectric effect, the number of photoelectrons emitted does not depend on the frequency of the light, but only on its intensity. The frequency of the light affects only the kinetic energy of the photoelectrons, because each photon carries an energy of
E=hf
where h is the Plank constant and f is the frequency of the wave, and then this energy is converted into kinetic energy of the photoelectron. But the number of photoelectrons emitted depends only on the number of incoming photons, so it depends only on the intensity of the light. Therefore, violet and blue light cause the emission of the same number of photoelectrons.
You might be interested in
When light propagates from a material with a given index of refraction into a material with a smaller index of refraction, the s
SSSSS [86.1K]

Answer: A) increase

Explanation:

7 0
3 years ago
Which one of the following is not equivalent to 2.50 miles?
lisabon 2012 [21]

Answer:

Choice C is not equivalent to 2.50 miles.

Explanation:

The given data is now converted into feet, inches, kilometers, yards and centimeters:

mi - ft

x = (2.50\,mi)\cdot \left(5280\,\frac{ft}{mi} \right)

x = 13200\,ft

x = 1.320\times 10^{4}\,ft (Choice A)

mi - in

x = (2.50\,mi)\cdot \left(5280\,\frac{ft}{mi} \right)\cdot \left(12\,\frac{in}{ft} \right)

x = 158400\,in

x = 1.584\times 10^{5} (Choice B)

mi - km

x = (2.50\,mi)\cdot \left(1.61\,\frac{km}{mi} \right)

x = 4.025\,km (Different from Choice C)

mi - yd

x = (2.50\,mi)\cdot \left(5280\,\frac{ft}{mi}\right) \cdot \left(\frac{1}{3}\,\frac{yd}{ft}  \right)

x = 4400\,yd

x = 4.40\times 10^{3}\,yd (Choice D)

mi - cm

x = (2.50\,mi)\cdot \left(1.61\,\frac{km}{mi} \right)\cdot \left(100000\,\frac{cm}{km}\right)

x = 402500\,cm

x = 4.025\times 10^{5}\,cm (Choice E)

Choice C is not equivalent to 2.50 miles.

6 0
4 years ago
Which of the following describes the relationship between work and power
Pani-rosa [81]

Answer:

Power is the rate which work is done.

Explanation:

<em>Power</em> is the rate which work is done. Power is measured in watts.

<em>Work</em> is the use of force to move an object. Work is measured in joules

7 0
3 years ago
A motorboat traveling with a current can go 160 km in 4 hours. against the current it takes 5 hours to go the same distance. Fin
MatroZZZ [7]
<h2>Speed of motorboat is 36 km/hr and speed of current is 4 km/hr.</h2>

Explanation:

Let speed of motor boat be m and speed of current be c.

A motorboat traveling with a current can go 160 km in 4 hours.

   Distance = 160 km

   Time = 4 hours

    Speed = m + c

   We have

            Distance = Speed x Time

            160 = (m+c) x 4

            m + c = 40     --------------------- eqn 1

Against the current it takes 5 hours to go the same distance.

   Distance = 160 km

   Time = 5 hours

    Speed = m - c

   We have

            Distance = Speed x Time

            160 = (m-c) x 5

            m - c = 32     --------------------- eqn 2

eqn 1 + eqn 2

           2m = 40 + 32

             m = 36 km/hr

Substituting in eqn 1

               36 + c = 40

                      c = 4 km/hr

Speed of motorboat is 36 km/hr and speed of current is 4 km/hr.

3 0
3 years ago
Which statement correctly stated kepler's 3rd law of planetary motion?
nadya68 [22]
When you square the "year" of each planet and divide it by the cube of its distance, or axis from the sun, the number would be the same for all the planets
8 0
4 years ago
Read 2 more answers
Other questions:
  • According to the solar nebular theory, a supernova triggered the collapse of a nebula, which began the formation of clumps of ga
    12·1 answer
  • The concentration of sodium and potassium ions in the blood and body fluid is regulated by :
    6·1 answer
  • How much force does a soccer goalie
    9·1 answer
  • Due to human demand because of its importance to life, the Earth's most precious resource is 
    5·2 answers
  • A concave mirror creates a real, inverted image 16.0 cm from its surface. If the image is 3.5 times larger, how far away is the
    13·1 answer
  • You and your 3 friends are driving down the road. All the wheels go flat at the exact same time, that's not good. You have to us
    15·1 answer
  • What formula can I use to solve speed and temperature in soundwave​
    8·1 answer
  • Here's another question!
    13·2 answers
  • Can someone please help me ?
    14·1 answer
  • I NEED HELP ASAP!!!!!!!!!!! Draw a circuit with a switch, and 5 light bulbs. 3 of the bulbs must be in a series and be operated
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!