Which is the best example of the wave phenomenon called transmission? a. a street is seen through a window b. sound is heard around an open doorway c. a coin seems smaller at the bottom of a swimming pool d. an image of a tree is seen is on the surface of a smooth lake

What happens to light waves from a star as the star moves away from earth?

Gunpowder residue is most likely to show up where on a shooters hands

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)