PHL275H1 Final: singer exam study notes

Prairie dogs are burrowing rodents. They do not suffocate in theirburrows, because the effect of air speed on pressure createssufficient air circulation. The animals maintain a difference inthe shapes of two entrances to the burrow, and because of thisdifference, the air (? = 1.29 kg/m3) blows past the openings atdifferent speeds, as the drawing indicates. (vA = 9.6 m/s, and vB =1.2 m/s.) Assuming that the openings are at the same verticallevel, find the difference in air pressure between theopenings.
1 Pa
Indicate which way the air circulates

Consider the potential difference between pairs of points in (Figure 1) .

Suppose that E = 7.5 V .

What is the magnitude of the potential difference  ΔV 14 ?

Express your answer to two significant figures and include the appropriate units.

What is the magnitude of the potential difference  ΔV 24 ?

Express your answer to two significant figures and include the appropriate units.

What is the magnitude of the potential difference  ΔV 34 ?

Express your answer to two significant figures and include the appropriate units.

Consider the potential difference between the pairs of points in (Figure 1). Suppose that E = 9.0 V. 

What is the magnitude of the potential difference ?V14?

What is the magnitude of the potential difference ?V24?

What is the magnitude of the potential difference ?V34?