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qwelly [4]
3 years ago
5

In an experiment different wavelengths of light, all able to eject photoelectrons, shine on a freshly prepared (oxide-free) zinc

surface. Which statement is true
Physics
1 answer:
topjm [15]3 years ago
6 0

Answer:

the energy of the photons is greater than the work function of the zinc oxide.

                     h f> = Ф

Explanation:

In this experiment on the photoelectric effect, it is explained by the Einstein relation that considers the light beam formed by discrete energy packages.

                    K_max = h f - Ф

in the exercise phase, they indicate that different wavelengths can inject electrons, so the energy of the photons is greater than the work function of the zinc oxide.

                     h f > = Ф

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During one trial, the acceleration is 2m/s^2 to the right. What calculation will give the tensions in actin filaments during thi
solniwko [45]

Answer: hello your question is poorly written attached below is the complete question

answer :

TA = 1.6*10^-24 * 60 * 2,  TB = 1.6*10^-24 * ( 60 + 30 ) * 2  -- ( option 1 )

Explanation:

a = 2m/s^2

Ta = m₁ a = 60 * 1.6 * 10^-24 * 2 ц

Tb - Ta = m₂ a

∴ Tb = m₂ a  + Ta

       = ( 30 * 1.6 * 10^-24 * 2 ) +  ( 60 * 1.6 * 10^-24 * 2 )

= ( 30 + 60 ) * 1.6 * 10^-24 * 2 ц

7 0
3 years ago
What forces contribute to density
mixer [17]
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5 0
2 years ago
Why do sex cells contain only half the number of chromosomes needed for offspring? Explain
Bogdan [553]

Answer:

None, egg cells don't have chromosomes. No, sex cells do have chromosomes. Meiosis reduces chromosome number so that sex cells (eggs and sperm) have a half set of chromosomes–one homolog of each pair. This is the haploid number.

3 0
3 years ago
You have a meteorite sample and you decide to use the uranium-235/lead-207 system to date it. After analysis, you find that it h
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Originally there must been

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5 0
2 years ago
What happens to the energy of a wave as it moves away from its source?
Eddi Din [679]

Answer:

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3 0
3 years ago
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