Your fingers hold water in a straw. You insert a straw of length L into a 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 P A outside the straw?

Q: A one-shell and two-tube type heat exchanger has an overall heat transfer coefficient of 300…

A: The capacity ratio is The number of transfer units is

Q: O Assignment Score: 1426/2800 O Resources E Give Up? O Hint Check Ans A 0.573 kg metal cylinder is…

A:

Q: A garden hose with an internal diameter of 3.1 cm is connected to a (stationary) lawn sprinkler that…

A: Given data: Internal diameter of the garden hose (d1) =  3.1 cm = 3.1×10-2 m.Diameter of the…

Q: My concern/doubt: both values don't match with the density of gold, values are 100%correct. is it…

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Q: Water flows down a 1 m hill through a pipe that widens from 5 cm2 at the top of the hill to 15 cm2…

A:

Q: A firetruck water pump discharges water at 20 m/s into a hose of diameter 6 cm. The hose runs up 30…

A:

Q: A rectangular box with an open top is floating on the surface of a swimming pool. During a rainstorm…

A: Since there's no information given about the thickness of the box, we can't really find its buoyant…

Q: Snorkeling by humans and elephants. When a person snorkels, the lungs are connected directly to the…

A: density of water= 997 kg/m3 g= 9.8 m/s2

Q: Mars has an average atmospheric pressure of 0.007 atm, would it be easier or harder to  drink from a…

A: The atmospheric pressure is an average pressure exercised by the atmospheric gases. This pressure…

Q: Spherical panicles of a protein of density 1.8 g/cm3 are shaken up in a solution of 20°Cwater. The…

A:

Q: "A board that is 20.0 cm wide, 5.00 cm thick, and 3.00 m long has a density 350 kg/m3. The board is…

A:

Q: Consider a water tower that is 10-meter tall with a small hole at its base, 10 meters above the…

A: This is based on Toricellis principle

Q: A fish maintains its depth in fresh water by adjusting the air content of porous bone or air sacs to…

A: given:  density of fish, df = 1.08 g/cm3 density of water, dw = 1 g/cm3

Q: A rock, which weighs 1400 N in air, has an apparent weight of 90O N when submerged in fresh water…

A:

Q: A tank holds a large amount of water. A pipe is connected to the tank at the upper end and is open…

A: The given values are, d1=19.0 cm=0.19 mh1=1.60 md2=6.20 cm=0.062 mh2=0.650 mp1=1.80 atmp2=1.00 atm

Q: Mercury is poured into a U-tube as shown in Figure a. The left arm of the tube has cross-sectional…

A: Pressure p at the dashed line is given by  P=density×g×h,

Q: 10. A balloon is filled with helium (density = 0.180 kg/m³) to a volume that has a radius of 1.50 m…

A: A balloon filled with helium where the density of the helium gas isto a volume that  has a radius of…

Q: Your dorm has an amateur hour every Friday night. Since you have a tremendous lung capacity, you…

A:

Q: The aorta is approximately 25 mm in diameter. The mean pressure there is about 100 mmHg, and the…

A:

Q: You observe two helium balloons floating next to each other at the ends of strings secured to a…

A: We are given 2 inflated balloons, at the ends of a string, Length of separation = 1-2 cm Air is…

Q: Snorkelers breathe through tubes that extend above the surface of the water. In principle, a…

A: The pressure difference should be equal to the pressure on the body due to the water.

Variation of pressure

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