How is electrical resistance related to electric current?

Which have a positive charge? neutrons atoms protons electrons

Calculate the density of mercury if 500 cm3 has a mass of 6.60 kg. Give your answer in g/cm?.

Why are collisions between galaxies more likely than collisions between stars within a galaxy?

Four students are asked to find the mass of a mineral using a calibrated balance. The results were as follows. 16.009g 15.780g 16.110g and 15.990g the known mass of the mineral is 16.100g which student's result was most accurate?

If the bar magnet is flipped over and the south pole is brought near the hanging ball, the ball be 1) I'am not sure 2) Unaffected by the magnet. 3) Attracted to the magnet 4) Replaced by the magnet.

Consider the flow of an incompressible Newtonian fluid between two parallel plates that are 4 mm apart. If the upper plate moves to the right with u1 = 5 m/s, while the bottom one moves to the left with u2 = 1.

Calculate the force of earth's gravity on a 1kg mass at earth's surface. the mass of the earth is 6.0

A train started from rest and moved with constant acceleration. At one time it was traveling 27 m/s, and 150 m farther on it was traveling 54 m/s.

What best describes the motion of the medium particles in a longitudinal wave?

How many electrons are in the third energy level of a calcium atom