The diagram represents part of Mendel's pea plant experiment. He crossed white-flowered pea plants with purple-flowered pea plants. Flower color has the same type of heredity as pea color.

What was most likely the result of the experiment?

- one plant with white flowers and three with purple flowers
- one plant with purple flowers and three with white flowers
- four plants with white flowers
- four plants with purple flowers

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)