Physics Quiz

What must be the Area of a heating duct that replenishes air in a room of 300 m³ every 15 minutes if air moves through it at 3 m/s, assuming constant air density?

• A) 0.11 m²

• B) 0.10 m²

• C) 0.12 m²

• D) 0.09 m²

If water is pumped at 0.5 m/s through a 2 cm diameter pipe under a pressure of 3 atm, what would be the flow speed and pressure in a 1.3 cm diameter pipe on the second floor 5 m above?

• A) 2.6x10³ Pa

• B) 2.5x10³ Pa

• C) 2.7x10³ Pa

• D) 2.8x10³ Pa

What is the exit speed of water from a punctured above-ground pool if the total depth is 2.5 m and the puncture is 1 m above the ground?

• A) 3.1 m/s

• B) 3.0 m/s

• C) 3.2 m/s

• D) 2.9 m/s

How high will water shoot up if a pipeline connected to a town's water system at street level pressure of 150 kPa breaks?

• A) 15.3 m

• B) 15.0 m

• C) 15.5 m

• D) 14.8 m

What is the radius of the aorta as mentioned in the worksheet for studying fluid flow continuity and Bernoulli's equation?

• 0.5 cm

• 1.0 cm

• 2.0 cm

• 1.5 cm

According to the worksheet, what is the speed of blood passing through the aorta?

• 20 cm/s

• 30 cm/s

• 40 cm/s

• 50 cm/s

What is the typical radius of a capillary as given in the worksheet?

• (4 x 10^-4) cm

• (5 x 10^-4) cm

• (6 x 10^-4) cm

• (3 x 10^-4) cm

What is the speed of blood flow through a typical capillary according to the worksheet?

• (4 x 10^-3) m/s

• (5 x 10^-3) m/s

• (6 x 10^-3) m/s

• (7 x 10^-3) m/s

Based on the worksheet, what is the estimated number of capillaries in the human body?

• 376800

• 476800

• 276800

• 176800

What is the density of root beer being investigated for delivery in a restaurant, as mentioned in the worksheet?

• 1090 kg/m³

• 1190 kg/m³

• 990 kg/m³

• 890 kg/m³