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3 years ago

A celestial body has these properties:

Physics

2 answers:

EleoNora [17]3 years ago

8 0

Answer:

Answered

Explanation:

A celestial body has these has these properties

It is too small to clear objects that are in its orbital path.

It has a rocky surface but no rings.

Since, it is very small, it has no ring and it has rocky surface it must be either be a Moon or the dwarf planet PLUTO. Although mars and mercury are also small and planets and have rocky surfaces but they can clear objects in there orbital path.

vichka [17]3 years ago

4 0

I think that would be the moon

"too small to clear objects that are in its orbital path" , which means that it probably not a planet.

hope this helps

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3 years ago

A weather balloon is designed to expand to a maximum radius of 21 m at its working altitude, where the air pressure is 0.030 atm

dezoksy [38]

Answer:

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Explanation:

$P_1$ = Initial pressure = 0.03 atm

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$V_2$ = Final volume of gas = $\frac{4}{3}\pi r_2^3$

$T_1$ = Initial temperature = 200 K

$T_2$ = Final temperature = 323 K

From ideal gas law we have

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\\\Rightarrow \frac{P_1\frac{4}{3}\pi r_1^3}{T_1}=\frac{P_2\frac{4}{3}\pi r_2^3}{T_2}\\\Rightarrow \frac{P_1 r_1^3}{T_1}=\frac{P_2r_2^3}{T_2}\\\Rightarrow r_2=\frac{P_1r_1^3T_2}{T_1P_2}\\\Rightarrow r_2=\left(\frac{0.03\times 21^3\times 323}{200\times 1}\right)^{\frac{1}{3}}\\\Rightarrow r_2=7.65\ m$

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2 years ago

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g A fiber optic is made by covering a thin fiber core material with a cladding material. An optical fiber works on the principle

zimovet [89]

Answer:(b)

Explanation:

Optical fiber works on the principle of total internal reflection . Total internal reflection occurs when the following two conditions are met

(1) When the angle of incidence of light is greater than the critical angle and,

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3 years ago