Two hockey pucks, labeled a and b, are initially at rest on a smooth ice surface and are separated by a distance of 26.0 m . simultaneously, each puck is given a quick push, and they begin to slide directly toward each other. puck a moves with a speed of 2.30 m/s , and puck b moves with a speed of 3.90 m/s .
your answer should satisfy common sense. for instance, can you decide which of the following values for the distance covered by puck a would definitely be wrong, regardless of the speed of the two pucks and considering that the two pucks are sliding toward each other?
(a) 5 m
(b) 33 m
(c) 27 m
(d) 1 m
(e) 21 m

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?

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. if the frequency of this light wave is 1.1 x 108 hz, what is the wavelength of this microwave?