1. describe: three technological objects that you value that would be of less value to a family in a developing country.
2. explain: how voting for someone in congress influences which technologies will be developed.

Phase changes are chemical changes. true or false

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.

Ln finding the density of liquid why is the method of using a density bottle more accurate than the one of using a measuring cylinder