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3 years ago

One significant result of the Michelson experiment of 1880 was that it:

Physics

2 answers:

Alika [10]3 years ago

8 0

Answer:

calculated the speed of light over a short distance

Explanation:

Albert Michelson was an American physicist who conducted an experiment regarding the speed of light in the air 1880s. He believed in the existence of "aether," a field of space that is deemed necessary for transporting electromagnetic forces. In order to do this, he setup a device in order to accurately measure the speed of light in in aether. His device is now known as "Michelson interferometer." The result was actually negative. 

In order to make his experiment even more accurate, he collaborated with Edward Morley, a famous American scientist. Although the result failed, together, they were able to improve and come with the a standard length of light. This calculated the speed of light over a short distance, which was the significant result of Michelson's experiment.

Thus, this explains the answer.

viva [34]3 years ago

8 0

Answer: "accurately measured the speed of light in the air."

Explanation:

*Galileo "measured man's reaction time."

*Fizeau "calculated the speed of light over a short distance."

(+ I answered this correctly on the quiz.)

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3 years ago

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Naya [18.7K]

<Continuation of the question>

(a) the spring constant (in N/m) and

(b) the weight of the block hanging from the third spring.

the distance for the first spring is 20cm, the second 35cm, the third 50cm.

Answer:

a) To find the spring constant, we'll use the formula

F=kx, if we make k the subject we'll get

k=F/x, where F=4.5N, x = 35cm - 20cm = 15cm = 0.15m

k=F/x = 4.5N/0.15m = 30N/m is the Answer

b) to find the weight of block hanging on third spring

we use the formula F=kx

where k = 30N/m, x=50cm-20cm=30cm=0.30m

F=kx = (30N/m)*(0.30m) = 9N is the Answer

4 0

3 years ago

Use the drop-down menu to answer the question. which sound wave-object interaction is used by animals in echolocation?

Dima020 [189]

Answer:

Reflection

Explanation:

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3 years ago

An alpha particle (charge +2e) and an electron move in opposite directions from the same point, each with the speed of 2.80×10^5

Evgesh-ka [11]

Answer:

Explanation:

Magnetic field due to moving charge =

$B=\frac{\mu_0}{4\pi} \times \frac{qv}{r^2}$

q is charge moving with velocity v and r is distance from point at which field is calculated .

For alpha particle

$B_1=\frac{\mu_0}{4\pi} \times \frac{2\times 1.6\times10^{-19}\times 2.8\times 10^5}{(8.25\times 10^{-9})^2}$

= 0.1316 x 10⁻³ T

For electron

$B_2=\frac{\mu_0}{4\pi} \times \frac{ 1.6\times10^{-19}\times 2.8\times 10^5}{(8.25\times 10^{-9})^2}$

= .0658 x 10⁻³ T .

Both these magnetic field will be same in direction because direction of equivalent current is same for both the particles .

Hence

Total magnetic field

= B₁ + B₂ = .1974 x 10⁻³

= 1.974 x 10⁻⁴ T .

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3 years ago

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slega [8]

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2 years ago