Two people carry a heavy electric motor by placing it on a light board 1.80 m long. One person lifts at one end with a force of 350 N, and the other lifts the opposite end with a force of 620 N.

What is the weight of the motor?

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

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?

What instrument is used to measure liquid volume?