Which of the following comparisons correctly describes subatomic particles? 1.An electron has a negative charge and a mass larger than the mass of a proton.
2.A neutron has a negative charge and a mass smaller than the mass of a proton.
3.A neutron has a neutral charge and a mass larger than the mass of an electron.
4.A proton has a positive charge and a mass smaller than the mass of an electron.

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?

Which system of units is used by only a small number of countries in the world, including the u.s.