The density of warm air inside a hot air balloon is 0.8 kg/m^3 while the density of the surrounding air is 1.2 kg/m^3. If the balloon fabric, gondola, fuel and tanks, cables and passengers, amount to 875 kg: A. What is the minimum volume of the balloon necessary to lift the balloon in the air? B. Radius of the balloon if it is spherical in shape?

Q: a) An iron block weight 800 N in the air. The density of the iron is 7600 kg/m^3. b) What is the…

A:

Q: QUESTION 7 A U-shaped tube is open to air on both ends and filled with water (blue) and an unknown…

A: Given: The density of the water is 1x103 kg/m3. d=6 cm=0.06 mh=20 cm=0.2 m

Q: (a) If it takes 1.25 min to fill a 23.5 L bucket with water flowing from a garden hose of diameter…

A:

Q: A spherical weather balloon is filled with hydrogen until its radius is 3.50 m. Its total mass…

A:

Q: The viscous force on an oil drop is measured to be 3.0 ✕ 10−13 N when the drop is falling through…

A: Given, viscous force =3.0×10-13 Nspeed of drop =4.5×10-4 m/secradius of drop =2.5×10-6 mwe are asked…

Q: 2. A 10 kg block of aluminum (density 2700 kg/m) is attached to a rope. (a) What is the tension…

A:

Q: A simplified model of how an airplane flies relies on a difference in air pressure between the top…

A:

Q: A Styrofoam (50 kg/m3) ball with a volume of 0.01 m3 is tethered with a string to the bottom of a…

A:

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

A:

Q: Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid.…

A:

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

A:

Q: water pipe narrows from a radius of (R1=5 cm) to a radius of (R2=2 cm. If the speed of the water in…

A: Flow rate in the car is constant=> Av=constant A=area v=velocity

Q: A spherical weather balloon is filled with hydrogen until its radius is 2.90 m. Its total mass…

A: Given The radius of the spherical balloon is r = 2.90 m. The total mass of the balloon is m = 16…

Q: A plastic beach ball has radius 20.0 cm and mass 0.10 kg, not including the air inside, (a) What is…

A: a)radius = 20 cm mass =  0.1 kg volume = (4π/3)(0.2)3  = 0.03351 m3Weight of the beach ball = mg +…

Q: A hollow sphere of inner radius 8.0 cm and outer radius 9.0 cm floats half- submerged in a liquid of…

A:

Q: A rock with a mass of 546 g in air is found to have an apparent mass of 344 g when submerged in…

A: In the given question, Mass of rock in air (ma) = 546g = 0.546kg Mass of rock in water (mw) = 344g =…

Q: A 20.0-kg lead mass rests on the bottom of a pool, (a) What is the volume of the lead? (b) What…

A: Given  Mass of lead m=20kg Density of lead ρ=11340 kg/m3

Q: Q1: A water pipe narrows from a radius of (R1=5 cm) to a radius of (R2=2 cm. If the speed of the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A recreational (open) hot air balloon (i.e., Pinside is approximately Poutside) has a volume of 2219…

A: The volume of hot air balloon when fully inflated is V = 2219 m3. Assume the total weight of the…

Q: 7. (a) What is the buoyant force on a balloon filled with 1.0 m^3 helium at sea level. (b) What is…

A:

Q: Q4: What fraction (f) of an iceberg floating in seawater is visible above the surface, if the…

A: Given: Density of freshwater ice pf = 917 kg/m3 Density of seawater pi = 1024 kg/m3

Q: You are designing a diving bell to withstand the pressure of seawater at a depth of 250 m. (a) What…

A: depth = h = 250 m Density of sea water = ρsw = 1030 kg/m3 Diameter = d = 30 cm = 0.30 m Radius = r =…

Q: A small piece of cork weighs 0.224 N in air. When held sumberged underwater, there is a net upward…

A:

Q: 2. A pipe with a radius of 2 cm is connected to another pipe with a radius of1 cm. If the velocity…

A:

Q: A spherical weather balloon is filled with hydrogen until its radius is 3.00 m. Its total mass…

A: Given:Radius of balloon = 3.0 m.Total mass with instrument = 15 kg

Q: A hollow sphere of inner radius 8.0 cm and outer radius 9.0 cm floats half-submerged in a liquid of…

A: Given information: Here, r1 and r2 are the inner and the outer radius of the sphere respectively…

Q: A US Navy nuclear submarine (mass m = 10,000,000 kg) is cruising under the Arctic ice sheet at a…

A:

Q: 1. The atmospheric pressure at sea level is 1 x 105 Pa. Your desk right now is about 0.8 m long by…

A: The pressure is defined as the force per unit area.  Area of the rectangle = length x width

Q: A rock with a mass of 577 g in air is found to have an apparent mass of 363 g when submerged in…

A:

Q: 3. As shown in the figure, a container has a vertical tube, whose inner radius is 32.00 mm,…

A:

Q: A 20.0 kg lead mass ( with density = 11.3 x 10^3 kg/m^3) rests on the bottom of the pool. (g = 9.80…

A: Given: The mass of lead is m=20 kg. The density is ρ=11.3×103 kg/m3. The gravitational acceleration…

Q: A rock is suspended by a light string. When the rock is in air, the tension in the string is 40.1 N.…

A:

Q: Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. A…

A:

Q: (a) Calculate the difference in blood pressure between the feet and top of the head for aperson who…

A:

Q: A Styrofoam (50 kg/m3) ball with a volume of 0.01 m3 is tethered with a string to the bottom of a…

A: Given: The density of the stryofoam ball is 50 kg/m3. The volume of the ball is 0.01 m3.

Q: A 2.8 kg balloon is filled with helium ( density = 0.179 kg/m³). You may want to review (Pages 513 -…

A: Recall Buoyant force=weight of displaced fluid Here fluid is air.

Q: Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid.…

A: The mass of the chunk of copper, m = 475.0 g The apparent mass of the chunk of copper, ma = 438.3 g…

Q: 40. Water flowing through a garden hose of diameter 2.74 cm fills a 25-L bucket in 1.50 min. (a)…

A: Given,

Q: When two soap bubbles touch, the larger is inflated by the smaller until they form a single bubble.…

A: (a) Given data The radius of the single bubble is r1=1.50 cm The surface tension of the soapy water…

Q: Problem: As part of a lubricating system for heavy machinery, oil of density 850 kg/m^3 is pumped…

A:

Q: A spherical weather balloon is filled with hydrogen until its radius is 4.10 m. Its total mass…

A: Radius (R) = 4.10 m mass (m) = 16 kg

Q: Hofisaib is a doctor aboard a US Navy nuclear submarine, and is currently off the Coast of Hong Kong…

A: To solve the question, we will use the formula: P=hρg

Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.