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Sindrei [870]
3 years ago
16

Wilam made a chart to summarize the results of experiments with the photoelectric effect. Which best describes how to correct Wi

lam’s error? The first result should state that frequencies of light that were lower than the frequency threshold of the metal could not eject electrons. The second result should state that as soon as light struck the metal, protons were ejected. The second result should state that just before light struck the metal, electrons were ejected. The third result should state that the kinetic energy of the ejected electrons depends only on the frequency of the photons.
Physics
2 answers:
Arlecino [84]3 years ago
7 0
A is the answer. I jjust took the quiz.
rodikova [14]3 years ago
3 0
The first result should state that frequencies of light that were lower than the frequency threshold of the metal could not eject electrons<span>
</span>
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3
vovangra [49]
Your answer is. D. 10÷60 = 1.66km/hr
4 0
2 years ago
Pepe and Alfredo are resting on an offshore raft after a swim. They estimate that 3.0 m separates a trough and an adjacent crest
Agata [3.3K]

Answer:

The velocity (v) of the wave is 3.08 ms^{-1}.

Explanation:

According to the figure, the distance (\large{L}) between a trough and its adjacent crest is \large{L = 3 m}. Also the wavelength (\large{\lambda}) of the wave is \large{\lambda = 2L}. Pepe and Alfredo count 11 crests to pass the raft in \large{t} = 21.5 s.

So, the time period (\large{T}) of oscillation of the wave is

\large{T} = \dfrac{t}{11} = \dfrac{21.5}{11} = 1.95s

So, the velocity (\large{V}) of the wave is

\large{V = \dfrac{\lambda}{T} = \dfrac{2 \times L}{T} = \dfrac{2 \times 3}{1.95}= 3.08 ms^{-1}}

4 0
3 years ago
A tug-of-war game is played by five c/hildren: three on one team and two on the other. How much force will the two child team ha
dem82 [27]

Answer:

no, 3 porces is more tha 2 so the power between the 3 should be more than 2

Explanation:

4 0
3 years ago
A proton is released in a uniform electric field, and it experiences an electric force of 5 X 10^-10 N toward the South. What is
Ymorist [56]

Answer:

Electric field on proton

E=3.12\times 10^9\ N/C

Explanation:

Given that

Force,F=5\times 10^{-10}\ N

We know that

Charge on proton

q=1.6\times 10^{-19}\ C

We know that

Force = Electric field x Charge

F= E x q

E=\dfrac{F}{q}\ N/C

E=\dfrac{5\times 10^{-10}}{1.6\times 10^{-19}}\ N/C

E=3.12\times 10^9\ N/C

Electric field on proton

E=3.12\times 10^9\ N/C

4 0
3 years ago
Which of these is an example of physical weathering? Rock breaking up due to carbonic acid Rock breaking up due to mechanical fo
neonofarm [45]

Answer:

Biological weathering

Explanation:

7 0
3 years ago
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