Discuss why we have to test the properties of a human made made substance before putting it into use

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point