106.68 centimetres are in 3.50 feet
To begin with, we can use the formula that links frequency, wavelength and velocity.
Because you already have the wavelength and the frequency, you just need to solve for velocity. You can do this by multiplying each side of the equation by frequency.
Therefore, 400 x 2.5 = 1000m/s.
Hope this helps :)
Answer:
Bottom left corner for whatever group that is
Lithium, sodium, and potassium all react with water