What is the mass number of an atom with 5 protons and 7 neutrons

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Which lists the organs in the correct order as food passes from the mouth to anus?