PLEASE HELPPP A helicopter flies in a circle of radius 375 m, taking a time of 42 s to complete one
revolution. What is the magnitude of the acceleration of the helicopter toward the center of
its circular path?

Most short-period comets do not have randomly oriented orbits because

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver