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nevsk [136]
3 years ago
5

One astronomer believes that the density of the universe remains constant. One physicist believes that the density of the univer

se changes over a period of time. Which of these statements best explains why the astronomer and physicist have different views on the density of the universe?
Most data on density of the universe are inaccurate.

Scientists provide different theories to strengthen science.

Scientists having different interests arrive at different conclusions.

Most experiments on density of the universe cannot be repeated.
Physics
2 answers:
Alex3 years ago
8 0

Answer:

Scientists having different interests arrive at different conclusions.

Explanation:

Science helps society by taking decisions based on investigations, which must be supported by argumentation to become accepted. Therefore, because curiosity and concern are based on inner experience rather than fact, scientists who have different views and arrive at opposite resolutions.

Llana [10]3 years ago
6 0
I think the third option is the answer 
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12.33

Explanation:

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3 years ago
A hockey puck has a coefficient of kinetic friction of μk = .35. If the puck feels a normal force (FN) of 5 N, what is the frict
alina1380 [7]

Answer:

The frictional force is  F_f =  1.75 \  N

Explanation:

From the question we are told that

     The coefficient of kinetic force is  μk = 0.35

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          F_f =  \mu_k  *  F_N

=>       F_f =  0.35  *  5

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3 0
3 years ago
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Anon25 [30]

Answer:

Metal - smallest band gap energy

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semiconductor -  Band gap of intermediate energies

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Explanation:

Metal - smallest band gap energy

it is due to the fact that valence and conduction bond in metal are in overlapped conditioned. Therefore showing zero gap energies

insulators -  large band gap energies

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semiconductor -  Band gap of intermediate energies

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while for superconductor cooper pair theory is applied for calculating gap energies.

5 0
4 years ago
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amm1812

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