A single-engine helicopter has two rotors; a main rotor and a tail rotor. The main rotor has a diameter of 14.6 m and rotates at the rate of 480 rev/min while the tail rotor with a diameter of 1.84 m rotates at 3875 rev/min. What are the speeds, in m/s, of the tips of each rotor

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill