You throw a rock off of a cliff in the horizontal direction with a velocity, v. one second later you throw an identical rock with the same velocity, v, in the horizontal direction. what is true about the distance between the two rocks beginning after you throw the second one? (a) it depends on the height of the cliff.(b) deductions 0% whether the distance between the rocks will increase or decrease depends on the potential 100% velocity v with which they are thrown.(c) the distance between the rocks will stay the same as time passes.(d) it cannot be determined.(e) the distance between the rocks will increase as time passes.(f) the distance between the rocks will decrease as time passes,

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)