A box has a mass of 3 kg. The box is lifted from the floor and placed on a shelf. If the box gains 100 J of Ep, how high is the shelf? 1.20 m
2.34 m
3.40 m
1.50 m

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Ascientific blank must be testable and capable of being proven false?

Does current flow through or across a resistor?