A 40kg box moving in the +x direction at 22m/s collides with an 80 kg object going in the -x direction at 20m/s. Whethre they stick together or bounce off one another the total amount of momentum after collision must be A. less than the total amount of momentum before collision

B. there is no way to calculate that

C. the same as the total momentum before collision

D. more than the total amount of momentum before collision

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.

What is the temperature in degrees celsius of a substance with a tempature of 49k

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)