Answer:
Energy, 
Explanation:
It is given that,
The MRI (Magnetic Resonance Imaging) body scanners used in hospitals operate at a frequency of 400 MHz,
We need to find the energy for a photon having this frequency. The energy of a photon is given by :
So, the energy of the photon is 
. Hence, this is the required solution.
Answer:
Salty Water
Explanation:
Swimming in Salty water gives us more buoyancy when freshwater does not.
Answer:
i think yes, because the sand together with the filters catches all the impurities of the water that will pass through them. (btw sorry for my English, this is translated from my language in translator, so don't mind my English pls)
There is an indirect relationship between length and frequency. The longer the length the pipe has, the higher frequency it is. The shorter the length the pipe has, the lower frequency it is.
<u>Explanation:</u>
The four properties of the string that affect its frequency are length, diameter, tension, and density. These properties are described below: When the length of a string is changed, it will vibrate with a different frequency. Shorter strings have higher frequency and therefore higher pitch.
The longer the tube is the lower the pitch of the note that it can emit. When a tube is heated it expands and so is longer! As the gas in the tube gets warmer the molecules move faster, that means they can carry the vibrations of the sound wave more rapidly and so the pitch goes up.
The most likely reason for Mrs. Wilson's warning will be the magnet might lose its magnetism.
<h3>What is magnetism?</h3>
Magnetism is a component of the larger phenomena of electromagnetic. The most well-known effects occur in ferromagnetic materials,
Which are highly attracted by magnetic fields and maybe magnetized to become permanent magnets, hence creating magnetic fields. It is also feasible to demagnetize a magnet.
We should not drop a magnet on the floor since magnets progressively lose magnetism and grow weak over time if they are not properly preserved.
Hence this is most likely the reason for Mrs. Wilson's warning will be the magnet might lose its magnetism.
To learn more about magnetism refer to the link;
brainly.com/question/19542022
