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olasank [31]
3 years ago
11

A protostar is _____.

Physics
2 answers:
defon3 years ago
8 0

<u>Answer</u>

5.the stage before a star becomes a main sequence star

<u>Explanation</u>

A protostar is a small star that is still gathering its masses. When it forms enough masses it make a parent molecular cloud.

This been the case, from the choices given, the correct statement about a protostar is;

5.the stage before a star becomes a main sequence star

valentinak56 [21]3 years ago
5 0
Its the stage before a star becomes a main sequence star. hope i helped you guys
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A gas is collected over water at 20C in a eudiometer tube until the pressure is equilibrated with the atmospherica pressure. Wha
solong [7]

Let's assume that the pressure given is 771 torr.

Answer:

747.44 torr

Explanation:

The eudiometer tube is a setup that collects gas in a liquid (generally water). After the thermal equilibrium, the gas becomes in equilibrium with the vapor of water above the liquid.

By Dalton's law, the total pressure of a mixture is the sum of the partial pressure of its components. The partial pressure is the pressure that the gas would have at the same conditions if it was alone. So, the pressure of the dry gas is its partial pressure.

The total pressure is the barometric pressure, and the partial pressure of the water vapor at 20°C is 23.56 torr (the value can be found at a thermodynamic table). So, the pressure of the dry gas (P) is:

771 = 23.56 + P

P = 771 - 23.56

P = 747.44 torr

6 0
3 years ago
what is the average acceleration of a car if a car rest from 0m/s and reaches a final velocity is 50m/s in 10m/s
GuDViN [60]

Answer:

Assuming that you meant the final velocity of 50 m/s was reached in 10 s, the answer would be 5 m/s^2.

Explanation:

V_{f} = V_{i} + at

So we update that with the values that we have.

50 = 0 +a(10)

then simplify that using algebra to solve for a and we get 5 m/s^2

6 0
3 years ago
You place a box weighing 289.9 N on an inclined plane that makes a 35.9 degree angle with the horizontal. Compute the component
Ksivusya [100]

Answer:

Fgparallel =  170N

Explanation:

Acting down the incline would be the paralell force. The Force of gravity on an incline for the parallel portion is mgsinθ.

Fg parallel = mgsinθ

mg is 289.9, as that is the weight. θ is 35.9

Fgpar = 289.9sin35.9

Fgparallel =  170N

5 0
3 years ago
Light is polarized by using:
maxonik [38]

Answer:

Polaroid fliter

Explanation:

light can be polarized by using Polaroid filters

Polaroid fliter are made of special material that is capable of blocking one of the two planes of vibration of an electromagnetic wave

hope this is useful--(have a good day)

8 0
3 years ago
What factors the weight of an object?
MAVERICK [17]

Answer:

Gravity

Explanation:

5 0
4 years ago
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