You and a friend live on opposite ends of a long, straight street and agree to meet somewhere on the street between your homes. You leave promptly at 1pm, traveling at 1.8 m/s toward your friend’s house. Your friend, late as always, doesn’t leave until 1:10, and travels toward your house at 2.1 m/s. If you meet at a point 630 m from your friend’s house, what’s the distance between your house and your friend’s house?

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?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87