An atom has 21 electrons, 17 protons and 18 neutrons. What is the total charge of the atom?

If you were on a jury, do you think you would expect individual characteristics in the evidence? why or why not? what effects might it have if individuals expect to have individuals characteristics presented? this question is for forensic science

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?