What elements compose the stars and planets in the universe

1 answer:

6 0

Well hydrogen would be the main element, as a process called nuclear fusion with both helium and hydrogen atoms occurs within stars. And planets are the products of dead stars that have burned through their supplies of hydrogen, helium, and carbon. Planets are a product of this.

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By what factor must the amplitude of a sound wave be decreased in order to decrease the intensity by a factor of 2?

alina1380 [7]

I believe that the answer to the question asked above is the following

sound intensity = sound power / (4 pi R2<span>)
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so if you decrease the intensity by a factor of 2 the sound wave will also decrease by a factor of 2.

Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.

4 0

3 years ago

Read 2 more answers

Which of the following is an arithmetic sequence? A. 2, 1, 4, 3, 6, 5, …

sergey [27]

Explanation:

it is not a arithmetic sequence

6 0

2 years ago

A cylinder 0.170 m in diameter rotates in a lathe at 530 rpm . what is the tangential speed of the surface of the cylinder?

Ad libitum [116K]

Diameter = 0.170 meter
Circumference = 0.170 π meters

530 rpm = 530 circumferences / minute

   = (530 x 0.170 π meters) / minute

   =    283.06 meter.minute

   =    4.72 meters/second

8 0

3 years ago

Two liquids, A and B, have equal masses and equal initial temperatures. Each is heated for the same length of time over identica

DochEvi [55]

Answer:

So the specific heat of the liquid B is greater than that of A.

Explanation:

Liquid A is hotter than the liquid B after both the liquids are heated identically for the same duration of time from the same initial temperature then according to heat equation,

$Q=m.c.\Delta T$