Matt tosses a set of keys straight up to Sanjit, who catches them from a window 1.1 s later at a height of 14 m above the point of release. T/I (a) Determine the initial velocity of the keys. [ans: 18 m/s [up]] (b) Determine the velocity of the keys when they were caught. [ans: 7.3 m/s [up]]

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

Which lists the organs in the correct order as food passes from the mouth to anus?

What is the increase in density of a medium due to wave travel?