Answer:
equal to 1
Explanation:
When any ray of light falls or strikes on a surface, the ray is reflected back and the angle of reflection is equal to angle of the incidence, where both the angles are always measured from the path of light that is normal to surface of the point at which the ray of light strikes the surface. This is called as the laws of reflection of light.
And therefore, the ratio of the angle of incidence to the angle of reflection is always equal to 1.
Surface tension is a film made by water and it's polar characteristic. Since water is polar, it tends to stick together. When something tries to break the surface of water, surface tension comes into play. Simply, surface tension is a sort of film that tries to prevent things from breaking the water's surface. An example would be water on a penny that domes instead of breaking or going flat.
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Answer:
83000000
Explanation:
Conversion factor: 1 kg = 100000 cg
1) Centigram = Kilogram * 100000
2) Centigram = 830 * 100000
3) Centigram = 83000000
~~Hope this helps~~
Answer:
Conduction is the main method of thermal energy transfer in solids.
Hope this helps.....
Answer:
The correct option is A
Explanation:
Firstly, it should be noted that the freezing point of a substance can be assumed to be melting point of that substance because a substance will normally change from liquid to solid (freezes) at the same point it changes from solid to liquid (melts). For example, water freezes at 0°C and also starts melting at 0°C.
Thus, the substance with the lowest melting point among the substances mentioned in the question is alcohol (ethanol) with the melting point of -114°C. Hence, <u>ethanol also has the lowest freezing point thereby freezing at the lowest temperature.</u>