A smoking room is to accommodate 50 smokers. The fresh air requirement for smoking areas is specified to be 40 L/s per person. The air velocity in the ventilation duct is 8 m/s. Determine: b) The diameter of the ventilation duct in [cm] SOLUTION
Q: In the figure below, a small block is sent through point A with a speed of 9.5 m/s. Its path is…
A:
Q: A 2.0-cm-tall object is 20 cm to the left of a lens with a focal length of 10 cm. second lens with a…
A: Height of the object, Object distance, to the left of the first lens.The focal length of the first…
Q: Many balloons are tied to a house, causing it to fly into the air. The mass of a house is about…
A:
Q: A balloon is released from a tall building. The total mass of the balloon, including the enclosed…
A: Given Total mass of the balloon and gas = 2.0 kg Total volume = V = 5 m3 Find average density
Q: To first approximation, we can ignore the flow of blood through the human circulatory system and…
A:
Q: A balloon filled with helium gas has an average density of ??=0.22kg/m3. The density of air is…
A: Given data: ρa=1.23 kg/m3ρb=0.22 kg/m3V=0.021 m3 Need to determine the expression and numerical…
Q: 1 a) A container of volume 2000 cm3 is completely filled by carefully pouring 1.7 kg of powder into…
A:
Q: a 25cm diameter cylinder that is 36cm long contains 60g of oxygen gas at 20 degree c what is the…
A: Write the given values with the suitable variables. d=25 cm=0.25 mL=36 cm=0.36 mm=60 gT=20 °C=293 K…
Q: The human circulation system has approximately 1X109 capillary vessels. Each vessel has a diameter…
A: Given: Number of capillaries, n=1×109Diameter of vessels, d=8μm,Cardiac output, Q=5L/min, As we know…
Q: Let's begin with a simple calculation of the weight of air using density. Find the mass of air and…
A: Given data The length of the room is l = 4.4 m. The width of the room is w = 6.1 m. The height of…
Q: The mass of air in a room which is 3 m × 5 m × 20 m is known to be 350 kg. Find its density (kg/m³)
A: Given The mass of the air is m=350 kg. The volume of the room is V=3 m × 5 m × 20 m=300 m3. The…
Q: A study room has dimensions of 8 m by 10 m and 3.5 m tall. The air in the room is to be exchanged 7…
A: Given: dimension of room: 8 m × 10 m × 3.5 m velocity of air, v = 8.3 m/s time taken to remove air 7…
Q: The main intake air duct of a forced air gas heater is 0.305 m in diameter. The inside volume of the…
A:
Q: A box-shaped metal can has dimensions 14 in. by 6 in. by 7 in. high. All of the air inside the can…
A: dimensions of box 14 in. by 6 in. by 7 in.
Q: An oil circulates through a pipe (SG = 0.85), if the speed of the oil is 20 m / s and the diameter…
A: Volumetric flow is speed of oil multiplied by cross sectional area of pipe. Velocity =20m/s Diameter…
Q: Estimate the average blood pressure in a person’s foot if the foot is 1.32 m below the aorta, where…
A: Height, h = 1.32 mDensity, ρ = 1060 kg/m³Blood pressure (initial),, h = 1.32 mBlood pressure at h, P…
Q: The density of air under ordinary conditions at 25*C is 1.18g/L. How many kilgrams of air are in a…
A: Given data: Density (ρ) = 1.18 g/L Dimensions of room = 11.0ft ×v11ft × 9.00 ft 1 in = 2.54 cm 1 L…
Q: Human blood flows from the aorta to the capillaries. A girl has an aorta radius of 13 mm. Assume She…
A:
Q: A 13 cm radius air duct is used to replenish the air of a room 9.1m×5.5m×3.8m every 17 min. How fast…
A: Given information: Here, r is the air duct’s radius, V is the room’s volume and t is the time…
Q: Snorkels are U-shaped tubes that allow swimmers to breath while swimming just below the surface of…
A:
Q: Raw milk is stored at a dairy farm in a refrigerated cylindrical vat 6.50 feet wide and 12.5 feet…
A:
Q: A viscous fluid with viscosity η = 5.4 × 10-3 Pa s is flowing through a section of a pipe with the…
A: Let L and r denote the length and radius of the pipe. They are given as 18 m and 1 m, respectively.…
Q: L (a) The heart pumps blood into the aorta at a rate of 4 the aorta's diameter is 2.1 cm. Calculate…
A: (a) To calculate the average speed of blood in the forts we can use the formuleswhere Vannd is the…
Q: What is the speed of the blood flow (in cm/s
A:
Q: The approximate inside diameter of the aorta is 0.49 cm; that of a capillary is 8 µm. The…
A: Given:- The approximate inside diameter of the aorta is 0.49 cm= 0.49 x 10-2 m That of a capillary…
A smoking room is to accommodate 50 smokers. The fresh air requirement for smoking areas is specified to be 40 L/s per person. The air velocity in the ventilation duct is 8 m/s. Determine:
b) The diameter of the ventilation duct in [cm] SOLUTION
Step by step
Solved in 2 steps with 1 images
- Set up the problem P1V1=P1V1 v1=V1 (P1/P1) V1= 11.0 L(98.0 kPa/86.2 kPo) enallenge : A weather balloon has a volume of 90.0 L when it is released from sea level. What is the atmospheric pressure on the balloon when it has grown to a size 175.0 L? Identify the unknown : pression: P Initial volume: v1 = 90.0 L Final volume: v2 = 175.0 L Send a chatFind the number of molecule per unit volume of oxygen at N.T.P. (Mass of oxygen 5.313 × 1026 kg. R.M.S. speed of molecule = %3D oxygen molecules at N.T.P. = 461.2 m/s and 1 atmosphere pressure = 1.013 × 10° N/m²).The average speed of blood in the aorta is 0.330 m/s, and the radius of the aorta is 1.00 cm. There are about 2.00 × 109 capillaries with an average radius of 6.19 μm. What is the approximate average speed of the blood flow in the capillaries? ?mm/s
- Assuming biological substances are 100% water, estimate the mass of a fly. Take a fly to be roughly a cylinder 4 mm long and 2 mm in diameter. kgNeed Help: It is known that a cubical object made of cast aluminum 0.213 m on a side contains a hollow cavity also in the shape of a cube but of unknown dimensions. If the mass of the object is 22.8 kg, determine the length of each side of the interior cubical cavity. The density of aluminum is 2.70 103 kg/m3. Given Tip: How is the volume of the cubical object related to the volume of aluminum in the object and the volume of the cubical cavity? How is the mass of the cubical object related to the mass of aluminum in the object? Recall how the volume of a cube is related to the length of each side of the cube.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 fast does air flow in the duct?
- For modeling and calculation purposes, architects treat air as an incompressible fluid. As an architect's intern, you are doing the specs on a dorm air conditioning system that is designed to replace the air in each room every twenty-three minutes. If the rooms each have a volume of 200 m3and they are supplied by ducts with a square cross section, determine the following. (a) the length of each side of a duct if the air speed in the duct is to be 3.6 m/s. m (b) the length of each side of a duct if the air speed at the duct is to be a value twice this speed.mA chemical in a measuring cylinder exerts a pressure of 2.66 x 104 Pa at a depth of 20.0 cm. If the value of g is 9.8 N/kg, the density of the chemical is Select... kg/m³. 201 =90A light balloon is filled with 397 m3 of helium at atmospheric pressure. (a) At 0°C, the balloon can lift a payload of what mass? kg (b) In the table below, observe that the density of hydrogen is nearly half the density of helium. What load can the balloon lift if filled with hydrogen? | kg Densities of Some Common Substances at Standard Temperature (0°C) and Pressure (Atmospheric) Substance p(kg/m³) p(kg/m3) Substance 0.917 X 10 7.86 X 10 Air 1.29 Ice Aluminum 2.70 X 10 Iron Benzene 0.879 X 103 Lead 11.3 X 10 Copper 8.92 X 103 Mercury 13.6 X 103 Ethyl alcohol Fresh water 0.806 X 10% Oak 0.710 X 10 1.00 X 10 Oxygen gas 1.43 Glycerin 1.26 X 103 Pine 0.373 X 103 19.3 X 10 1.79 X 10-1 21.4 X 10 1.03 X 10 10.5 X 103 Gold Platinum Helium gas Seawater Hydrogen gas 8.99 X 10-2 Silver
- A 1000 L tank contains 500 L of water with a salt concentration of 10 g/L. Water with a salt concentration of 60 g/L flows into the tank at a rate of 80 L/min. The fluid mixes instantaneously and is pumped out at a specified rate Rout. Let y(t) denote the quantity of salt in the tank at time t. Find the salt concentration when the tank overflows assuming that Rout = 40 L/min.Assume that a raindrop has a volume of 0.05 cm^3 and you need an Avogadro's number of raindrops to fill up the cubic water tank. What is the length of the edge of the tank?The main uptake air duct of a forced air gas heater is 0.300 m in diameter. What is the average speed of air in the duct if it carries a volume equal to that of the house’s interior every 15 min? The inside volume of the house is equivalent to a rectangular solid 13.0 m wide by 20.0 m long by 2.75 m high.