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3 years ago

When water vapor is cooled it three forms into water droplets why does this represent a conservation in mass

1 answer:

8 0

In the conservation of mass, mass is never created or destroyed in chemical reactions in the same way water is not created or destroyed it is only transferred from one form to another and its mass is always conserved.

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What has research determined about the orbit of an electron around a nucleus?

Wittaler [7]

<span>I think the correct answer from the choices listed above is the second option. The research that determined about the orbit of an electron around a nucleus would be that electrons orbit the nucleus in circular motions exactly as shown on the classic Bohr model.</span>

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4 years ago

PLEASE HELPPPP!!!!!!!!!!

son4ous [18]

Answer:

I think its B

Explanation:

5 0

3 years ago

Read 2 more answers

What type of resource can be regenerated or replenished by biochemicl cycles

Valentin [98]

A: A resource that will always be there, can be replenished by the biogeochemical cycles. B: Can regenerate if they are alive or can be replenished by biochemical cycles if they are non living.

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3 years ago

light traveling in a medium with a refractive index 1.28 is incident on a plate of another medium with index of refraction 2.22.

balu736 [363]

Answer: The angle of incidence at which the light will fully be polarized is 60°

Explanation:

To find out the angle of incidence θB for which reflected light is fully polarized we use the equation

n1 sinθB = n2sin(90°− θB) = n 2cosθB

Since n1 is the index of refraction for medium 1 and n2 is the medium of refraction for medium 2 we then solve the equation to get

θB = tan −1 (n2/n1)

= tan −1 (2.22/1.28)=60.0°

5 0

1 year ago

Given that the acceleration of gravity at the surface of Mars is0.38 of what it is one Earth, and that Mars' radius is 3400 km,d

evablogger [386]

Answer:

$1.156\times 10^{24}\ kg$

Explanation:

Given:

Gravity of Mars = 0.38 times the gravity at Earth

Gravity of Earth is, $g_{Earth}=9.8\ m/s^2$

Radius of Mars (R) = 3400 km

Mass of mars (M) = ?

We know that, the acceleration due to gravity of a planet of mass 'M' and radius 'R' is given as:

$g=\dfrac{GM}{R^2}$

Now, as per question:

$g_{Mars}=0.68g_{Earth}$

Plug in 9.8 for $g_{Earth}$ and solve for $g_{Mars}$ . This gives,

$g_{Mars}=0.68\times 9.8=6.67\ m/s^2$

Now, plug in this value in the above equation and solve for 'M'. This gives,

$6.67=\frac{6.67\times 10^{-11}M}{(3400\times 10^3)^2}\\\\1.156\times 10^{13}=10^{-11}M\\\\M=\frac{1.156\times 10^{13}}{10^{-11}}\\\\M=1.156\times 10^{24}\ kg$

Therefore, the mass of Mars is $1.156\times 10^{24}\ kg$ .

4 0

3 years ago