Answer:
Air.
Explanation:
To know which option is correct, let us consider the relationship between velocity and the wavelength of a wave. This is illustrated below:
Velocity, wavelength and frequency are related by the following equation:
Velocity = wavelength × frequency
v = λf
From the equation above, we can see clearly that the velocity is directly proportional to the wavelength.
This means that an increase in the wavelength will lead to an increase in the velocity and also, a decrease in the wavelength will lead to a decrease in the velocity.
Now, considering the table given in the question above, we can see that the wave has a higher speed in air. This simply means that the wave will also have a higher wavelength in air.
Thus, the correct answer to the question is: air
Answer:
Angular acceleration,
Explanation:
It is given that,
Displacement of the rotating wheel,
Time taken, t = 2.9 s
Initial speed of the wheel,
Final speed of the wheel,
Let is the angular acceleration of the wheel. Using the third equation of kinematics to find it as :
So, the angular acceleration of the wheel is . Hence, this is the required solution.
Air flows from high pressure to low pressure. So does water.
So do populations of people and animals, but that's another
story.
When you reduce the pressure in your lungs, air flows into them
from outside, and you inhale. When you increase the pressure
in your lungs, air flows out of them to the outside, and you exhale.
I haven't seen a whale in about 30 years, and they may have changed
since then. But the last time I saw some, air and spray were blowing
OUT of their blow-holes. As soon as I saw that, I said to myself:
"Self ! The pressure inside that creature's body must be greater than
the outside atmospheric pressure, and that's why the air is flowing out,
from the higher pressure to the lower pressure."
You forgot to add a photo.
Answer:
option "c" is correct
Explanation:
Physical science or Physics is the study of matter, energy and their mutual relationship.