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

The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign

Mackinzie walks 4 blocks west, then 2 blocks south, then 4 blocks east, and,finally, 1 block south. what is the magnitude of her total displacement duringthis walk (in blocks)?