A50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball
and brings it to rest in 0.20 seconds. What is the force exerted on the ball by the receiver?

c is the answer because when something is left after something evaporates that shows the chemical change.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.