Arectangular key was used in a pulley connected to a line shaft with a power of 7.46 kw at a speed of 1200 rpm. if the shearing stress of the shaft and key are 30 mpa and 240 mpa, respectively what is the length of the rectangular key if the width is one fourth that of the shaft diameter?

Describe the function of the endomembrane system? what organelles are involved?

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s