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Lesechka [4]
3 years ago
11

Why do scientists believe that light is made of streams of particles?

Physics
2 answers:
bonufazy [111]3 years ago
8 0

Scientists believe that light is made of streams of particles because only the presence of photons can explain phenomena observed during experiments on the photoelectric effect. These observations include only some frequencies of light causing the ejection of electrons, no time gap existing between light striking a metal and electrons being ejected, and intensity having no effect on the kinetic energy of the ejected electrons.


irina [24]3 years ago
5 0
I just need points to ask my own question.
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Answer:

57.1 m/s

Explanation:

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3 years ago
A spring has a spring constant of 120 newtons per meter. Calculate the elastic potential energy stored in the spring when it is
Black_prince [1.1K]
The elastic potential of a spring can be calculated using the formula
E = (1/2) k x²
where are given that 
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the stretched length is
x = 0.02 m

The elastic potential is
E = (1/2) (120 N/m) (0.02 m)²
E = 0.024 N-m<span />
7 0
3 years ago
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