What do we measure mass in ? a) meter b) liters c) grams

How to calculate voltage drop in a series circuit

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?