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Ad libitum [116K]
4 years ago
8

How is the lifetime of a star related to its mass?

Physics
1 answer:
Flauer [41]4 years ago
6 0
Stars having less mass collapses early than those with more mass. This can be explained by Einstein's equation E=mc².
According to this equation, mass of stars is converted into light due to thermonuclear reactions occuring in the core of star which acts as engine of the stars. This thermonuclear reactions keeps star alive. Thermonuclear reactions occurs slowly in massive stars hence massive stars live more than light stars.
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Tcecarenko [31]
I think its B because there is no chemical change when a phase change occurs
6 0
3 years ago
if an object is moving with a velocity of 25m/s, an acceleration of 5m/s and has a travel time of 5s, what is the final velocity
miv72 [106K]

V = at + V0

where v0 is the initial speed, a is the acceleration and t is the time.

So:

v = 5m/s^2*5s + 25m/s = 50 m/s

4 0
3 years ago
The makeup of a string quartet is _____.
slamgirl [31]
The answer to this question is two violins, a viola and a cello
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3 0
3 years ago
An advertisement claims that a centrifuge takes up only .127m of bench space but can produce a radial acceleration of 2400g at 4
givi [52]

Answer:

r=0.13m

Explanation:

From the question we are told that:

Distance d=0.127

Acceleration a=2400g

Angular Velocity \omega=4000rev/m

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8 0
3 years ago
14. The ancient geographic setting of an area is known as its
kolezko [41]
I think the correct answer from the choices listed above is option C. The ancient geographic setting of an area is known as its paleogeography. Paleogeography is the study of historical geography and is generally used in studying physical landscapes. Hope this answers the question. Have a nice day.
6 0
4 years ago
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