An underground tunnel has two openings, with one opening a few meters higher than the other. If air moves past the higher opening at a greater speed than it moves past the lower opening, what happens inside the tunnel?

Q: 18. The concentration gradient of oxygen is closest to .. 2.25 kg/m4 2.50 kg/m4 2.0 kg/m4 2.20 kg/m4

A: The concentration gradient is the difference of concentration per unit length.

Q: Long Snorkel: Inhalation of a breath occurs when the muscles surrounding the human lungs move to…

A: The formula for the pressure inside a fluid in-depth h be:

Q: Rooms A and B are the same size, and are connected by an open door. Room A, however, is warmer…

A: Two rooms A and B

Q: A mixture of water (density=1000 kg/m3) and vapor flowing with a mass rate = 7 kg/sec in a pipe of…

A: Solution:-Given thatmass flow rate of mixture (m)=7 kg/sdensity of water (ρw)=1000 kg/m3length of…

Q: A snorkeler takes a deep breath at the surface, filling his lungs with 4.0 L of air. He then…

A:

Q: If the density of dry air is 1.28kg/m3 then what is the mass of the air in the room in kg that the…

A: Given data:  Density of air (ρ) = 1.28 kg/m3 Room dimensions =  14.1ft x 15.5ft x 12.0ft Required:…

Q: A mixture of water (density =1000 kg/m3) and vapor flowing with a mass rate = 7 kg/sec in a pipe of…

A: Solution:-Given thatDensity of water (ρ)=1000 kg/m3mass flow rate of mixture (m)=7 kg/sGas fraction…

Q: When you swim underwater, the pressure of the water pushes against your chest cavity and…

A:

Q: Air (1.2 kg/m3) passes through the Venturi tube, and the heavier liquid in the U-shaped part is…

A: Applying Bernoulli's equation and the equation of continuity at points 1 & 2.   Po + pagh1 +…

Q: Snorkels are U-shaped tubes that allow swimmers to breath while swimming just below the surface of…

A:

Q: When you cough, you expel air at high speed through the trachea and upper bronchi so that the air…

A:

Q: A vertical piston–cylinder device contains a gas at a pressure of 100 kPa. The piston has a mass of…

A: The total pressure,

Q: A 2 cm diameter spherical fishing lure is cast into a pond and, though it submerges, it does not…

A:

Q: Your fingers hold water in a straw. You insert a straw of length L into a a tall glass of your…

A: To flow the liquid through the tube, the pressure P at the top of the liquid should be more than the…

Q: Prairie dogs are burrowing rodents. They do not suffocate in their burrows, because the effect of…

A: Given data VA=8.5 m/sVB=1.1 m/sρ=1.2 kg/m3

Q: A 19 cmcm radius air duct is used to replenish the air of a room 7.6m×6.7m×3.8m every 15 min. How…

A: The rate of airflow equals the area times the speed of the airflow. Now,

Q: Snorkelers breathe through short tubular "snorkels" while swimming under water very near the…

A: Assumption: In equilibrium, the air pressure in a snorkeler's lungs matches that of the surrounding…

Q: A 2.5 g latex balloon is filled with 2.4 g of helium. When filled, the balloon is a 30-cm-diameter…

A: Formula of terminal velocity is as follows; vt=2mgρACd…

Q: If you blow a thin stream of air with a speed of 7.2 m/s out of your mouth, what is the overpressure…

A: Given, Speed of air in your mouth = 0 Speed of air out of your mouth = 7.2m/s We need  to calculate,…

Q: For the next two items: A playroom has dimensions 3700 mm x 4300 mm x 2500 mm. How much does the air…

A: length of the room l = 3.7 m breath of the room b = 4.3 m height of the room h = 2.5 m volume of the…

Q: A metre long narrow bore held horizontally (and closed at one end) contains a 66 cm long mercury…

A:

Q: Prairie dogs are burrowing rodents. They do not suffocate in their burrows, because the effect of…

A: Write the given values using suitable variables. Here vA signifies velocity at point A and vB…

Q: Prairie dogs are burrowing rodents. They do not suffocate in their burrows, because the effect of…

A: Given: The speed of air at point A is vA=8.5 m/s. The speed of air at point B is vB=1.1 m/s.…

Q: what length would the trapped air column have if the temperature were 30°C and atmospheric pressure…

A:

Q: When an automobile moves for a long time, the air pressure in tyres increases slightly. Why?

A: When we drive, the frictional force between the tires and the road increases the temperature of the…

Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.