I need help with this review question. I’ll give extra points.

Amanometer is used to measure the air pressure in a tank. the fluid used has a specific gravity of 1.25, and the differential height between the two arms of the manometer is 34 in. if the local atmospheric pressure is 12.7 psia, determine the absolute pressure in the tank for the cases of the

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.