Suppose the length of the tube used in our experiment is 4 m and a tuning fork of frequency 150 Hz is used in air where the speed of sound is 340.8 m/s? (Give your answers as integers. For this question, the length of the tube is of the entire plastic cylinder, and not the adjustable length of the air column.) (a) Calculate the number n to find the number of resonances afterwards. n = (b) How many resonances will be observed? N = resonances

Natural forces that can alter ecosystems include seasons and climate changes. t or f

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?

How many electrons in an atom could have these sets of quantum numbers? =3n=3 electronselectrons =4,ℓ=2n=4,ℓ=2 electronselectrons =6,ℓ=ℓ=−1n=6,ℓ=2,mℓ=−1