If the area of surfaces is decreased by 40 % and thrust is increased by 60% then find the ratio of new pressure to old pressure

Q: A skateboard lands on all four wheels after riding a railing. If the skateboarder has a weight of…

A: weight = 800N area of single wheel is 0.0001 m^2 so ,area od all 4 wheels is 0.0004 m^2   pressure =…

Q: When is the flow considered Laminar? A B D Re = 4000 Re = 2000 Re 4000

A: Let's check each option one by one 1. Re = 4000  Incorrect option  If Re = 4000 then the flow is…

Q: (a) Calculate the force that the water exerts on the cork (which pushes it outwards). Give your…

A: Let the surface area of the container be A and the level of water above the cork be L. Let the area…

Q: If the original volume of a solid block of steel was 2.4 m^3, what is the change in volume after…

A: volume of block V = 2.4 m3 Increase of pressure ΔP = 3.4x106 N/m2 K for steel = 1.6×1011 N/m2

Q: A submarine dives to a depth of 187 ft in the ocean. What is the force (in pounds) acting on a hatch…

A: The pressure due to the fluid is given by  P =  h d g  where, h is the depth, d is the density of…

Q: If pressure inside a cylinder with a circular hatch is 2.5 atm and the radius of the entrance hatch…

A: Given data, pressure inside the cylinder, P = 2.5 atm = 2.5×2116.22  lbf/ft2 = 5290.55 lbf/ft2…

Q: Find the pressure gradient needed to pump 18 L of water per minute through a pipe of 6.5 mm radius.…

A:

Q: A Venturi tube is used to measure flow rate of 37 l/s. Tube diameter is 125 mm and throat diameter…

A: We are given flow rate of water. We convert the flow rate from L/s to m3/s. We are given diameter of…

Q: 24. A water balloon weighing 8.6 N rests on a table. The balloon has an area of 6.7 x 10 m² in…

A: Given: The weight of the balloon is 8.6 N. The area of contact with the table is 6.7x10-3 m2.

Q: You inflate the tires of your car to a gauge pressure of 38.0 lb/in2. If your car has a mass of 1825…

A: The gauge pressure of the inflated tires is Pin = 38 lb/in2The car's mass is m = 1825 kg.The number…

Q: Water flowing in a pipe reaches a point where the cross-sectional area of the pipe is reduced to…

A:

Q: Calculate the average pressure (in N/m2) exerted on the palm of a shot-putter's hand by the shot, if…

A:

Q: What is the depth of a lake if pressure of 8×105 [Pa] acts upon its bottom?

A: The pressure at the bottom of the lake,

Q: If you push a block against the wall with the force, F = 31N, ( Force is perpendicular to the wall)…

A: The force is applied perpendicular to the wall. So there are no vertical force component.

Q: What pressure (in N/m2) is exerted on the bottom of a gas tank that is 0.481 m wide by 0.814 m long…

A: Dear student, Since all questions are different therefore as per guidelines we can author only first…

Q: Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of…

A:

Q: A liquidof density 840 kgfows through aherizontal pipe that has across-sectional area of 2.90x 10 in…

A: ρ = 840 kg/m3 A1 = 2.90 x 10-2 m2 A2 = 9.30 x 10-2 m2 P1-P2 = 7.90 x 103 Pa

Q: What is the pressure at the bottom of a 4.30m deep pool filled with water if the atmospheric…

A: Given data:  Atmospheric pressure (Patm) = 1.013×105 Pa Height (h) = 4.30 m Required: The absolute…