You insert a straw of length L into a tall glass of your favorite beverage. You place your finger over the top of the straw so that no air can get in or out., and then lift the straw from the liquid. You find that the straw retains the liquid such that the distance from the bottom of your finger to the top of the liquid is h. Does the air in the space between your finger and the top of the liquid have a pressure P that is (a) greater than, (b) equal to, or (c) less than, the atmospheric pressure PA outside the straw? Explain your answer at least in 4 sentences.

Q: In a lecture demonstration, a professor pulls apart two hemispherical steel shells (diameter D) with…

A: (a) The force needed to apply equals the force required to overcome the pressure difference. The…

Q: An exploration submarine should be able to descend 1200 m down in the ocean. If the ocean density is…

A:

Q: What outward force (in N) is needed on the outside of a lung to create the pressure P noted in the…

A:

Q: The density of oil is 881 kg/m3. What is the oil's height if the pressure exerted by it is 250 Pa?…

A:

Q: The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.3 mm and is…

A: Given: The inner radius of the pulmonary artery: R = 2.3 mm (2.3 x 10-3 m); The length of the…

Q: An aneurysm is an abnormal enlargement of a blood vessel such as the aorta. Because of an aneurysm,…

A: Given:-  A2=1.7 A1  V1=0.39 m/s  ρ = 1060 kg/m3 Find:-  determine the amount by which the pressure…

Q: 3 A tall cylinder whose height is h=12.6 cm is initially filled with water (1.00 g/cm) up to h=5.3…

A: GivenHeight of cylinder hc = 12.6 cmDensity of water ρw = 1.00 g/cm3 = 1000 kg/m3Density of oil ρo =…

Q: An astronaut is working outside the International Space Station where the atmospheric pressure is…

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Q: Depth of a swimming pool is 5 m. How much is the water pressure at the bottom of the pool? How much…

A: Note:- “Since you have asked multiple questions, we will solve the first question for you. If you…

Q: Water (density = 1 000 kg m3) runs at 10 m/s through a long tube with a radius 0.050 m. The long…

A:

Q: What outward force (in N) is needed on the outside of a lung to create the pressure P noted in the…

A:

Q: 6. A liquid is flowing through a horizontal pipe whose radius is 2.08 × 10-2 m. The pipe bends…

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Q: Explain why (a) The blood pressure in humans is greater at the feet than at the brain (b)…

A: (a). The blood column to the feet is at a greater height than the head, thus the blood pressure in…

Q: A very strong wind is blowing over the flexible and flat roof of a house with its doors and windows…

A: Using Bernoulli's theorem, the pressure will decrease at the point where the fluid has high…

Q: A 60-kg person's two feet cover an area of A=140 cm. Assume the person is at rest. If the person…

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Q: A jet airplane in level flight has a mass of 8.65 ✕ 104 kg, and the two wings have an estimated…

A: We need to calculate the pressure difference, the speed of the air above the wings and the reason…

Q: he density of oil is 881 kg/m^3. What is the oil's height if the pressure exerted by it is 250 Pa?…

A: Given data:  Density (ρ) = 881 kg/m3 Pressure (P) = 250 Pa Required: Height (h)

Q: Consider a submarine at a depth 100 m below the ocean water surface. The submarine has two side…

A:

Q: In a sample of seawater taken from an oil spill, an oil layer 4.0 cm thick floats on 55 cm of water.…

A:

Q: The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.80 mm and is…

A:

Q: A U-tube open at both ends is partially filled with water. Oil having a density of 750 kg/m3 is then…

A: Given data *The density of oil is Doil=750 kg/m3 *The height of the column is L = 10.0 cm = 0.10 m…

Q: A tall, open rectangular container is filled with a liquid of density 460 kg/m3. The vertical…

A: Given that, atmospheric pressure ( P0)=1.013x10⁵ Pa Side of square base (a)= 0.06 m liquid  density…

Q: 4.1 Distinguish between density and relative density The weight of an object is 12 N in air. It has…

A: (4.1) The density of a substance is defined as the mass per unit volume. The expression for the…

Q: A jet airplane in level flight has a mass of 8.60 x 104 kg, and the two wings have an estimated…

A:

Q: A vertical, cylindrical pipe has a height of 2.0 m and a radius of 8.0 cm. Water flowing upward from…

A: The ,Bernoulli’s equation states that : P + 12ρv2 + ρgh = constant Here, P is the pressure, ρ is the…

Q: A small jet airplane has a total wing area of 90.0 m² and a mass of 7.43 x 10" kg. (a) If this jet…

A: Given,Total wing area, A = 90.0 m2mass of the airplane, m = 7.43 ×104 kgspeed of the wind travelling…

Q: A weather balloon has a volume of 90.0 L when it is released from sea level. What is the atmospheric…

A: According to Boyle's law, at a constant temperature, the pressure of a gas is inversely proportional…

Q: A person is diving in a lake in the depth of h = 15 m. The density of the water is ρ = 1.0 x103…

A:

Q: The pulmonary artery, which provides a horizontal connection between the heart and the lungs, is 8.4…

A: According to he poiseuille’s law for the flow rate of blood in pulmonary artery is,According to the…

Q: A 10 kg bicycle with a 70 kg rider has tires with a gauge pressure of 138 kPa. If the tires support…

A: Given: The mass of the cycle is 10 kg. The mass of the rider is 70 kg. The pressure with the tire is…

Q: A submarine has a circular top hatch with a 1 m diameter. What is the force exerted on the hatch…

A:

Q: A tall cylinder whose height is h=14.2 cm is initially filled with water (1.00 g/cm) up to h =5.86…

A:

Q: A tall cylinder whose height is h=12.9 cm is initially filled with water (1.00 g/cm) up to h=5.99…

A: Given Height of cylinder= hc = 12.9 cm Height of water = hw = 5.99 cm Density of water = 1 g/cm3…

Q: The water in a tank is pressurized by air, and the pressure is measured by a multifluid manometer as…

A: The air pressure in the tank is to be,

Q: What outward force (in N) is needed on the outside of a lung to create the pressure P noted in the…

A:

Q: Calculate the pressure exerted on the ground by a 77 kg person standing on one foot. Assume that the…

A: Given,The mass of the person, m=77kg

Q: The pressure at the bottom of a glass filled with water (p = 1000 kg/m³) is P. The water is poured…

A:

Q: What is the pressure at a depth of 580 m in a lake? (Pw = 1.00 × 103 kg/m³, Po = 1.01 × 105 Pa, and…

A:

Q: A yellow submarine is positioned at depth 225 m. What is the pressure at this point? The density of…

A: Given: The position of the is 225 m below the water.

Q: 3. Given a square board of area 0.00500 m^2. A small statue of mass 400 grams is placed on the…

A:

Q: A partially evacuated vertical cylindrical container is covered by a circular lid that makes an…

A:

Q: Water flows at speed of 5.6 m/s through a horizontal pipe of diameter 3.4 cm. The gauge pressure P…

A: Given that -- Water flow speed = 5.6 m/s horizontal pipe diameter = 3.4 cm  gauge pressure P1 of…

Q: During a very severe storm, wind blows past a window surface (parallel to the window surface) at…

A:

Q: Some species of whales can dive to depths of one kilometer. What is the total pressure they…

A: The total pressure experience at the depth can be calculated using following steps:Given:

Q: Water enters a pipe with a diameter of 2.0 cm at a speed of 15.0 m/s. • At what velocity will it…

A:

Q: 3 A tall cylinder whose height is h=14.8 cm is 3. initially filled with water (1.00 g/cm) up to…

A: Given Height of the cylinder is hc=14.8 cm Height of the water is hw=5.71 cm Density of water is…

Q: In 1654 Otto von Guericke, inventor of the air pump, gave a demonstration before the noblemen of the…

A: (a)

Fluid Pressure

The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.