The visible radiation produced by new stars within a molecular cloud get absorbed by dust grains and heats up the cloud
A molecular cloud is an interstellar cloud of gas and dust in which molecules can form, the most common of which is hydrogen .
The formation of stars occurs exclusively within molecular clouds because of their low temperatures and high densities, because the gravitational force acting to collapse the cloud must exceed the internal pressures that are acting "outward" to prevent a collapse.
Visible radiation are absorbed by dust grains and heats up the cloud as it cannot penetrate through the cloud instead get absorbed by the cloud . Newly formed stars are visible nearby, their images reddened by blue light which got scattered by the pervasive dust.
To learn more about molecular clouds here
brainly.com/question/3459894
#SPJ4
Yes, that is truly amazing.
They significantly reduced the noise's intensity by 90%, that might be proper reaction.
<h3>What is noise?</h3>
- Unwanted sound that is regarded loud, unpleasant, or disruptive to hearing is called noise.
- Physically speaking, there is no difference between unwanted sound and desired sound because both are vibrations traveling through a medium like air or water.
- When the brain receives and interprets a sound, a difference occurs.
- Decibels are used to measure sound (dB).
- A motorcycle engine operating is roughly 95 dB louder than regular conversation, which is around 60 dB louder than a whisper.
- Your hearing may begin to be harmed if exposed to noise over 70 dB for an extended period of time.
- Your ears can suffer instant damage from loud noise above 120 dB.
<h3>What is sound intensity?</h3>
- The power carried by sound waves per unit area in a direction perpendicular to that region is known as sound intensity or acoustic intensity.
- The watt per square meter is the SI measure of intensity, which also covers sound intensity.
Learn more about sound here:
brainly.com/question/14595927
#SPJ4
Answer:
P₂ = 1.22 kPa
Explanation:
This problem can be solved using the equation of state:
where,
P₁ = initial pressure = 1 KPa
P₂ = final pressure = ?
V₁ = initial Volume = 1 liter
V₂ = final volume = 1.1 liter
T₁ = initial temperature = 290 k
T₂ = final temperature = 390 k
Therefore,
<u>P₂ = 1.22 kPa</u>
Answer: 6s
Explanation:
Vs=32m/s speed at beginning of slowing down
Vf=0m/s stop speed
a= -6 m/s² acceleration
----------------
Use equation for acceleration :
a=(Vf-Vs)/t
a*t=Vf-Vs
t=(Vf-Vs)/a
t=(0-36)/-6
t=-36/-6
t=6 s
