A coast guard cutter detects an unidentified ship at 20.0km in the direction 15.0 degrees east of north. The ship is traveling at 26.0km/h on a course at 40.0 degrees east of north. The Coast Guard wishes to send a speed boat to intercept and inveatigate the vessel. If the speedboat travels at 50.0km/h , in what direction should it head?

This is the substance(s) formed in a chemical reaction.

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

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)