Which of the following plate interactions is most likely to form a mountain range? A A transform boundary between ocean plates
B A transform boundary between continental plates
C A convergent boundary between continental plates
D A subduction zone between a continental plate and an ocean plate
This is the last question for my final test

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.

How does changing the frequency affect the energy of the wave?