*15-116. The 200-kg boat is powered by the fan which develops a slipstream having a diameter of 0.75 m. If the fan ejects air with a speed of 14 m/s, measured relative to the boat, determine the initial acceleration of the boat if it is initially at rest. Assume that air has a constant density of Pw = 1.22 kg/m and that the entering air is essentially at rest. Neglect the drag resistance of the water. 0.75 m
Q: A helium-filled balloon (whose envelope has a mass of m = 0.260 kg) is tied to a uniform string of…
A:
Q: The large block shown is x = 16.0 cm wide, y = 18.0 cm long, and z = 27.00 cm high with a mass of…
A: The Data is taken from the given question as follows : The breadth of the box is x =…
Q: A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 N of…
A:
Q: A car is carrying a piece of plywood with dimensions 2.40 m by 1.15 m. If the mass of the plywood…
A:
Q: A cart is moving along and very close to a level air track at a speed of 0.36 m/s. The surface area…
A: Given The speed of a cart is u = 0.36 m/s. The surface area of the cart is A = 2.7 × 10–2 m2. The…
Q: A pipe transports gas up a hill. At the bottom of the hill, the mean velocity in the pipe is 10 m/s…
A:
Q: A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is…
A: Given:- The spring constant is k = 4200 N/m. The piston has a negligible mass and a radius r = 0.015…
Q: If the density of dry air is 1.28kg/m3 then what is the mass of the air in the room in kg that the…
A: Given data: Density of air (ρ) = 1.28 kg/m3 Room dimensions = 14.1ft x 15.5ft x 12.0ft Required:…
Q: (a) Find the average time (in s) required for an oxygen molecule to diffuse through a 0.195 mm thick…
A:
Q: Helium gas with a gauge pressure of 58 kPa is stored within a cube that has 45 cm long sides.…
A: Given data: P = 58 kPa L= 45 cm Need to determine the net force on the side of the cube.
Q: A certain rigid aluminum container contains a liquid at a gauge pressure equal to P0 = 2.02 × 105 Pa…
A:
Q: A pipe transports gas up a hill. At the bottom of the hill, the mean velocity in the pipe is 10 m/s…
A:
Q: A helium-filled balloon (whose envelope has a mass of m=0.260 kg) is tied to a uniform string of…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: In a 30.0-s interval, 500 hailstones strike a glass window of area 0.600m2 at an angle of 45.0 to…
A: Given data: Time t = 30s Number of hail stone n =500 Area a = 0.600m2 Angle =450. Mass of hail…
Q: The buoyancy force on the 640-kg balloon is F me balloon is Fair = {C1 •ti – C2 · Vt. nds, constants…
A: We know that the newton second law of motion is given as Fnet = ma where m is the mass of the…
Q: An air bubble of diameter 2 mm rises steadily through a solution of density 1750 kg/m'at the rate of…
A:
Q: A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is…
A: All solutions are given in the explanation.Explanation:Given spring constant of the spring (k) =…
Q: A closed cylindrical drum of diameter 500 mm has its axis vertical and is completely full of water.…
A: In the cylinder, a pressure will be developed between two surfaces having different diameters. Let…
Q: (e) Solve your initial value problem for v(t). You can use separation of variables or go by an…
A:
Q: A person is in a closed room (a racquetball court) with V = 453 m3 hitting a ball (m = 42.0 g)…
A: Given data: The volume of the room is: V = 453 m3 The mass of the ball is: m = 42 g The average…
Q: When a ball is thrown with a rotation, the airflow around the ball is impacted. The air on the side…
A: When a ball is thrown with a rotation, the airflow around the ball is impacted in a way that creates…
Q: In a tornado or hurricane, a roof may tear away from the house because of a difference in pressure…
A:
Q: Snorkelers breathe through short tubular "snorkels" while swimming under water very near the…
A: Assumption: In equilibrium, the air pressure in a snorkeler's lungs matches that of the surrounding…
Q: Platelet cells in blood play an essential role in the formation of clots and exist in normal human…
A:
Q: An aquatic organism needs to be neutrally buoyant to stay at a constant depth. Fish accomplish this…
A:
Q: If you blow a thin stream of air with a speed of 7.2 m/s out of your mouth, what is the overpressure…
A: Given, Speed of air in your mouth = 0 Speed of air out of your mouth = 7.2m/s We need to calculate,…
Trending now
This is a popular solution!
Step by step
Solved in 5 steps
- Bacteria have a density that is about the same as water. Their average velocity is 10^-3 m/s. A bacterium with a radius of 1 um should have a diffusion coefficient of about 2.2x10^-13 m^2/s. (a) Find the random-walk step size (b) How long does it take for an average walk to reach 1 mm in seconds and days? Note that we are considering the diffusion away from the starting point and are calculating the distance through three dimensions. Show your workA frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 N of lift per square meter of wing. (The fact that a wing has a top and bottom surface does not double its area.) a. At takeoff, an aircraft travels at 54 m/s, so that the air speed relative to the bottom of the wing is 54 m/s. Given the sea level density of air to be 1.29 kg/m^3, how fast must it move over the upper surface to create the ideal lift? b. How fast must air move over the upper surface at a cruising speed of 242 m/s and at an altitude where air density is one-fourth that at sea level?An aquatic organism needs to be neutrally buoyant to stay at a constant depth. Fish accomplish this with an internal swim bladder they can fill with air that they take in from the water through their gills. One complication is that the pressure in the swim bladder matches that of the surrounding water, but the water pressure changes with depth. Because the volume of a gas is inversely proportional to pressure (as you may already know if you have studied the ideal-gas law), the volume of air in a fish's swim bladder decreases with depth unless the fish actively adds more air. ▼ Part A Consider a 3.9 kg freshwater fish whose tissues have an average density of 1050 kg/m³. To what volume in mL must the swim bladder be inflated for the fish to be neutrally buoyant at the surface? Express your answer in milliliters to two significant figures. AV = Submit VD] ΑΣΦ Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining ? mL
- A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger. The cylinder comes to rest some distance above the plunger. The plastic tube has an inner radius of 6.56 mm and is frictionless. Neither the plunger nor the metal cylinder allow any air to flow around them. If the plunger is suddenly pushed upwards, increasing the pressure between the plunger and the metal cylinder by a factor of 1.35, what is the initial acceleration ? of the metal cylinder? Assume the pressure outside of the tube is 1.00 atmand that the top of the tube is open to the air.ssm A patient recovering from surgery is being given fluid intravenously. The fluid has a density of 1030 kg/m², and 9.5 × 10-4 m³ of it flows into the patient every six hours. Find the mass 55. flow rate in kg/s.For the same values as above, find the velocity of air during the test. Given that density and viscosity of air at 5°C are 1.269kg/m³ and 1.754 × 10-5kg/ms.
- A typical hot air balloon can carry 3–5 passengers in a wicker basket and has a total mass of m = 470 kg including passengers, not including the mass of air inside the balloon. The density of hot air inside the stationary balloon is ?hot = 0.960 kg/m3 and the density of the cooler outside air is ?cool = 1.22 kg/m3. Determine the volume of hot air required for the balloon to be in equilibrium so that it neither sinks nor rises in the air.A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open to the air at the top. Friction is absent. The spring constant of the spring is 3600 N/m. The piston has a negligible mass and a radius of 0.010 m. (a) When the air beneath the piston is completely pumped out, how much does the atmospheric pressure cause the spring to compress? (b) How much work does the atmospheric pressure do in compressing the spring? * I know that a is = 0.0088422743 m but b is NOT 8.950712099 J (wrong) please show work of how to work part b.A 0.504 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger. The cylinder comes to rest some distance above the plunger. The plastic tube has an inner radius of 5.88 mm and is frictionless. Neither the plunger nor the metal cylinder allow any air to flow around them. If the plunger is suddenly pushed upwards, increasing the pressure between the plunger and the metal cylinder by a factor of 3.03, what is the initial acceleration a of the metal cylinder? Assume the pressure outside of the tube is 1.00 atm and that the top of the tube is open to the air.