A pulley is used to raise a heavy crate. With the pulley it only takes an effort 1
force of 223 N to provide a resistance force of 1784 N. What is the
mechanical advantage of this pulley? *

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?