What is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside is 1.39? Neglect the mass of the balloon fabric and the basket.

Q: What is the ratio of heights to which ethyl alcohol andwater are raised by capillary action in the…

A: The expression for the height to which the ethyl alcohol is raised in the capillary tube is given…

Q: A spherical balloon has a radius of 7.15 m and is filled with helium. How large a cargo can it lift,…

A:

Q: One person's weight in air is 947 N while his weight underwater is 49 N. What is his percentage of…

A: % body fat =495ρavg-450 weight of person's in air is Wair=947 N weight of person's in water is…

Q: Under what conditions would a metal sphere dropping through a viscous liquid be in equilibrium?

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Q: Balloons are often filled with helium gas because it weighs only about oneseventh of what air weighs…

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Q: Given the density of He = 0.179 kg/m^3 and density of air = 1.29 kg/m^3. What formulas can be used…

A: Given Data; Helium: Density, ρHe=0.179 kg/m3 Air: Density, ρAir=1.29 kg/m3 Load, m=100 kg

Q: Consider a doublefluid manometer attached to an air pipe shown in Fig. P2–58. If the specific…

A: Pressure above the red color 1-1 should be same in both left and right tubes.

Q: Which has the greater density—an entire bottle of coke or a glass of coke? Explain.

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Q: A pitot tube on a high-altitude aircraft measures a differential pressure of 180 Pa. What is the…

A: The expression for the speed is,

Q: A cylindrical tank has a base area A and a height L, open at the top. Initially it was full of a…

A: Given data: The base area of tank is A. The length of tank is L. The density of liquid is ρ.

Q: Density of air is 1.36 g/ltr. Express it in, a. g/cm³ b. kg m

A: Density of air is given as,  ρ = 1.36 g/ltr (a) Density of air in the units of g/cm3 is, ρ = 1.36…

Q: QUESTION 7 A rocket engine shoots exhaust gas at 5.0E8 Pa of gas pressure through a nozzle whose…

A: Pressure is the force per unit area. P = F/a where, P = pressure F = force a = area

Q: When analyzing the acceleration of gases as they flow through a nozzle, what would you choose as…

A: For calculating the acceleration of the gases, it is important to analyze the flow through the inlet…

Q: The side view of a pipe is shown. The pipe diameter increases and then remains constant. P; is the…

A:

Q: A piece of rock is in equilibrium at the bottom of a beaker filled with water. Which of the…

A: Solution: (i) The conditions between buoyant force and weight of object is given below: Buoyant…

Q: A large weather balloon of mass 226.0 kg is filled with helium gas until its volume is 325.0 m3.…

A:

Q: If the density of the object is less than density of the fluid the object accelerates upward.…

A: True

Q: A typical piece of wood has a density of 750 kg/m?. How many 15.0 gram metal army men (or Barbies -…

A:

Q: Does atmospheric pressure add to the gas pressure in a rigid tank? In a toy balloon? When, in…

A: We know that pressure defined as force exerted per unit area. That is, pressure is inversely…

Q: Why is the pressure in the automobile's tires slightly greater after the car has been driven several…

A: After driving few kilometers, the temperature of the automobile’s tires is increased. As the…

Q: The apparent weight of a body in a fluid is related to the actual weight of the body by: apparent…

A: Solution as

Q: A boat (with a flat bottom) and it's cargo weigh 5,000 N. The area of the boat's bottom is 4 m^2.…

A: The volume of water displaced by the boat is equal to the volume of the boat under water. Vboat…

Q: A U-shaped tube, open to the air on both ends, contains mercury. Water is poured into the left arm…

A: The pressure at the left side point due to water having depth of 17.7 cm deep is

Q: By how much does the density of air increase when it is compressed to half its volume?

A: Formula for the density is:

Q: A simple U-tube contains mercury. When 11.2 cm of water is poured into the right arm, how high does…

A: Given, Water poured at right arm h1 = 11.2 cm = 11.2 x 10-2 m

Q: Atmospheric pressure in Denver is approximately 8.4 x 104 Pa.  How large a force does the still air…

A:

Q: The density of oil is less than that of water, yet a loaded oil tanker sits lower in the water than…

A: According to the Archimedes’ principle, the upward buoyant force experienced by an object submerged…

Q: A trash compactor can compress its contents to 0.350 times their original volume. Neglecting the…

A:

Q: A garden hose has an inner radius of 1.3 cm, is connected to a spray nozzle (radius: 0.5 cm). If…

A:

Q: A container filled with a fluid with density and height equal to p and h, respectively, is quickly…

A: Pressure is directly proportional to the height. It is measured in N/m2 P =…

Q: Blood is placed in a bottle 1.40m above a 3.8 cm long needle of inside diameter 0.40mm, from which…

A: The pressure inside the bottle can be obtained as p=ρgh=1020kg/m39.8m/s21.40m=1.4×104 Pa

Q: if a 33 g object has a volume of 47 cm3, would you expect it to sink or float in water ? Why?

A: Given:Mass of the object = 33 gVolume of the object = 47 cm3

Q: Why are persons who are confined to bed less likely to develop bedsores on their bodies if they rest…

A: We know, the equation for pressure is Hence, pressure is inversely proportional to area.

Q: 4.59 A water jet issues vertically from a nozzle, as shown. The water velocity as it exits the…

A: The water jet flow is shown below.

Q: Which has the greater density—5 kg of air at atmospheric pressure (that means, the air you breath)…

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Q: To determine an athlete’s body fat, she is weighed first in air and then again while she’s…

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Q: Why do helium balloons float in air? The air below the balloon moves upward, causing the balloon to…

A: Why helium balloons float in air .. When an air is in the air , The forces acting on it are…

Q: A decrease in the Reynolds number will result when O the radius of the moving object increases O the…

A: SOlution: what affect the Reynolds number

Q: In a horizontal pipe system, a pipe (i.d. 4 mm) that is 20 cm long connects in line to a pipe (i.d.…

A:

Q: A 7m diameter hot air balloon is neither rising nor fallinf. The density of atmospheric air is 1.3…

A: This is a problem based on the buoyancy force. The weight of the people and ballon must have to be…

Q: Determine the height that the water rises in a swinging pool which is 2.0m wide and 4.0m long, with…

A: Given: Dimension of swimming pool  Length L = 4 m Wide = 2 m Depth = 4 m mass of player  m = 150 kg