The propeller of an airplane is 9 feet in diameter. what is the speed of the tip of a propeller blade if the angular velocity of the propeller is 50 radians per second?

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Dangers of static electricity and how to prevent them.