Which path would the laser take when entering the water from air?
brown or black

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

The substances that are necessary for producing of certain hormones and that store and transport vitamins

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?