Answer:
A) a scientific theory or principle
Explanation:
A Theory or principle has to explain different observations for a specific phenomenon. Theories are tested in base of new data to see if they can fit with all the new variations. They gain more acceptance in the scientific world if they predict in a correct way the result of many observations.
For example the uncertainty principle which state that the position and the momentum of a particle can not be known at the same time. Many experiments that aim to test the Uncertainty principle demonstrated this property, but tests are currently being done with other variations to see if the principle still fits with them.
Answer:0.6kw
Explanation:
Power=force×velocity
Power=20×30=600w
In kw it's going to be 600/1000=0.6kw
Density of liquid is 1 g/mL.
<h3>What is density of a substance?</h3>
Density is the ratio of the mass and the volume of a substance
Mathematically density of a substance is given as follows:
The density of the substance is:
mass of liquid = 172 - 137 = 35 g
volume of liquid = 35 mL
Density of liquid = 35 g/35 mL
Density of liquid = 1 g/mL
In conclusion, density is obtained as a ratio of mass and volume.
Learn more about density at: brainly.com/question/1354972
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The tail consists of gas and dust that can extend hundreds of millions of kilometers away from the coma. Most comets actually have 2 tails: a plasma tail made of ionizedgas, and a dust tail made of small solidparticles. Comet tails point away from the Sun.
