Two tiny beads are 25 cm apart with no other charged objects or fields present. bead a has a net charge of magnitude 10 nc and bead b has a net charge of magnitude 1 nc. which one of the following statements is true about the magnitudes of the electric forces on these beads? a. the force on a is 100 times the force on b. b. the force on b is 10 times the force on a. c. the force on b is 100 times the force on a. d. the force on a is 10 times the force on b. e. the force on a is exactly equal to the force on b.

What are two different ways you could find the value of a? explain these methods.

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above