GGR270H1 Final: Week 12 Study Notes

The container shown in the figure is filled with oil (density = 900 kg/m³ ). It is open to the atmosphere on the left.

Part A -
What is the gauge pressure at point A?
Express your answer using two significant figures.
P_A=_____________Pa

Part B -
What is the pressure difference between points A and B?
Express your answer using two significant figures.
P_B-P_A=______________Pa

Part C -
What is the pressure difference between points A and C?
Express your answer using two significant figures.
P_C-P_A=_______________Pa

The formation of a standing wave requires?

a) constructive interference between two waves with different frequencies

b) interference between the incoming and reflected waves of the same frequency

c) two waves that have been traveling over a long distance

You are standing on the sidewalk as a police car recedes from youata speed of 20 m/s. The car’s siren has a fixed frequencyof 400 Hz.At the same time a second police car is approaching you.The secondcar is going at the same speed and has an identicalsiren.
A) What frequencies do you hear from each police car?
B) What is the frequency difference, if any, between thetwoobserved frequencies?