Question 3
A 17.0 kg crate is to be pulled a distance of 20.0 m, requiring 1210 J of work to be done on the crate. The job is done
by attaching a rope and pulling with a force of 75.0 N. At what angle is the rope held?

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

the higher the current the higher the mag field around it the higher the influence on the compass