an object, initially traveling at a velocity of 52 m/s, experiences an acceleration of -9.8 m/s2. how much time will it take it to come to rest?

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good

What component of earth’s atmosphere exists entirely as a result of photosynthesis?