Will mark as brainlist for only correct answer (Don’t answer if u don’t know or if ur not sure)

low, low

Explanation:

Longer wavelengths will have lower frequencies, and shorter wavelengths will have higher frequencies.

Large amplitude waves contain more energy. The other is frequency, which is the number of waves that pass by each second. If more waves( or more wiggly lines)  pass by, more energy is transferred each second

i don't understand. explain it clearly

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.