Say you shoot a paintball, which travels at 307 km/s. How long will it take the paintball to hit the target 250 meters away?

The clouds are grey and ground is wet. a quantitative b qualitative

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

What is the mass of 4 molecules of co2