Identify the scenarios below as to whether they would increase, decrease, or not change the velocity of the sound wave. Assume that no other changes are happening. a. Lowering the humidity of the air b. Increasing the temperature of the air c. Leaving the density of the air constant d. Changing the direction of the wind so that it’s blowing in the opposite direction of the sound wave

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Observations show that interstellar clouds can have almost any shape and

Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.