Abaseball player throws a baseball. the ball traveled 35 yards before it landed on the ground. the ball stayed in the air for 3.8 seconds. what is the average speed of the ball?

Which accurately compares concave and convex lenses?

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

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.