<u>Answer:</u> The average kinetic energy of helium atoms is 
<u>Explanation:</u>
To calculate the average kinetic energy of the atom, we use the equation:
where,
K = average kinetic energy = ?
k = Boltzmann constant = 
T = temperature = 
Putting values in above equation, we get:
Hence, the average kinetic energy of helium atoms is
Answer:
None of the stars give of light that is red-shifted
Explanation:
Motion of the observer or the source will cause a change in the wavelength of a wave. This is known as the Doppler effect. When an object and observer are getting close, blue shift occurs i.e., the wavelength gets shorter. When an object and observer are getting farther red shift occurs i.e., the wavelength gets longer.
Here, both the stars are getting closer to us so blue shift will occur.
Scalar quantities have only magnitude. example temperature, distance.
Vector quantities have magnitude and direction.Example force, velocity.
You can say "I applied a force p\of 3 newtons to the left" but you can't say I added 32 Fahrenheit to the left
Answer:
density of the gas
Explanation:
When traveling through gases, density of the gas also determines how fast a sound wave travels.
Answer:
220
Explanation:
5500 divided by 25 is 220
