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marusya05 [52]
3 years ago
8

The gaps on Mendeleev's table _____.

Physics
1 answer:
larisa86 [58]3 years ago
6 0
Represented elements not discovered in this time

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Is Mercury a heavier element than tin
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Yes because mercury has more protons and electrons that tin. (30 more)
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2 years ago
Determine the elastic energy U stored in<br> the compressed spring.
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Answer: The spring constant of the spring is k = 800 N/m, and the potential energy is U = 196 J. To find the distance, rearrange the equation: The equation to find the distance the spring has been compressed is therefore: The spring has been compressed 0.70 m, which resulted in an elastic potential energy of U = 196 J being stored.

Explanation:

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Which factors affect friction between two solid surfaces?
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Researcher measures the thickness of a layer of benzene (n = 1.50) floating on water by shining monochromatic light onto the fil
earnstyle [38]

Answer:

Minimum thickness; t = 9.75 x 10^(-8) m

Explanation:

We are given;

Wavelength of light;λ = 585 nm = 585 x 10^(-9)m

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Now, let's calculate the wavelength of the film;

Wavelength of film;λ_film = Wavelength of light/Refractive index of benzene

Thus; λ_film = 585 x 10^(-9)/1.5

λ_film = 39 x 10^(-8) m

Now, to find the thickness, we'll use the formula;

2t = ½m(λ_film)

Where;

t is the thickness of the film

m is an integer which we will take as 1

Thus;

2t = ½ x 1 x 39 x 10^(-8)

2t = 19.5 x 10^(-8)

Divide both sides by 2 to give;

t = 9.75 x 10^(-8) m

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2 years ago
Using calcium’s atomic structure, as shown in the image, what is this element’s atomic number?
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Atomic number of calcium is 20.

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