Wave speed = (wavelength) x (frequency)
= (45 meters) x (9 per second)
= 405 meters per second .
Answer:
When the frequency of the wave is increased, the pitch of the sound increases; that is, he sound becomes sharper or higher.
Explanation: Just completed on Edmentum
PH measures the concentration of hydrogen ions (
) in a solution. Knowing this, you can determine how acidic -or basic- your solution is.
Answer:
I think it has to do with Newtonian Physics
The bottom person will carry most of the weight because of the direction of the forces involved.
The strong one should be in the back to support the log the most if it is at an angle. The weaker person should be in the front to lift the log up and carry it, but not necessarily put in the same sort of strength. The person who is pushing it up will have a harder time than the person lifting it to make it easier to transport.
Note: I am not an expert at physics, this answer is based on articles on the internet
