20 kg 0.5 m kg p = 1000- m3 0.15 m

A cylindrical storage tank has a cross sectional area A1=1.5 m². The tank is set up vertically on the ground and filled with V=7.5 m³ of water. There is a valve at the bottom of the tank with an internal cross sectional area of 1.5 cm². What fraction of the total volume will be drained in the first 50 minutes after the valve is opened?

A fluid with density 1200 kg/m flows through this pipe. As the first location, A, the fluid travels at 7.5 m/s and at the second location, B, the fluid travels at 11 m/s. What is the difference in pressure between the two points? O-1.9 x 10 Pa +3.8 x 103 Pa -2.5 x 104 Pa -3.9 x 10 Pa O +5.0 x 104 Pa

The two arms of a U-tube are not identical, one having 6 times the diameter of the other. A cork in the narrow arm requires a force of F1 = 79 N to remove it. The tube is filled with water and the wide arm is fitted with a piston with area A2. What is the minimum force, F2, that must be applied to the piston to push the cork out?

At the surface of a freshwater lake, the pressure is 105 kPa What is the pressure increase in going 42.6 m below the surface? The density of fresh water at 4°C is 1.00 × 103 kg/m3.   answer in kPa

Write an equation for the pressure difference ΔP between the inside and outside of the ball when it is submerged a distance y below the surface of the water.

The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.60 mm and a length of 8.40 cm. If the drop in pressure between the heart and the lungs is 4.0 hPa. a) What is the average speed of the blood in the pulmonary artery?

A hollow spherical iron shell floats almost completely submerged in water. The outer diameter is 60.5 cm, and the density of iron is 7.87 g/cm°. Find the inner diameter. Number i Units

A Venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at speed v2 through a horizontal section of pipe whose cross-sectional area is A2 = 0.0937 m2. The gas has a density of ρ = 1.30 kg/m3. The Venturi meter has a cross-sectional area of A1 = 0.0234 m2 and has been substituted for a section of the larger pipe. The pressure difference between the two sections is P2 - P1 = 149 Pa. Find (a) the speed v2 of the gas in the larger original pipe and (b) the volume flow rate Q of the gas.   I posted it just now and recieved the wrong answers so i'm asking again. The answers are not A) 1.87 and B) 0.157.

On a roller coaster ride the total mass of a cart - with two passengers included - is 268 kg. Peak K is at 43.2 m above the ground and peak L is at 26.0 m. At location K the speed of the cart is 17.2 m/s, and at location L it is 12.5 m/s. (The wheel mechanism on roller coaster carts always keeps the carts safely on the rail.) K How much mechanical energy is lost due to friction between the two peaks? Submit Answer Tries 0/10