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Fluid Mechanics

Calculate the required diameter of a parachute with jumper

16. A parachute jumper with associated gear weighs 250 lb. The vertical component of the landing speed should not be more that 20 ft/s. By assuming the parachute to be open hemisphere, determine the required diameter of the parachute to be used at standard pressure and 80°F. Please see attached. FLUID MECHANICS 9TH EDITION.

Volume and Cubic Meters

A volume of 100.cm3, is how many cubic meters? a. 1.00 b. 1.00 x 10^-2 c. 1.00 x 10^-4 d. 1.00 x 10^-6 e. 1.00 x 10^-3

Pressure on a submarine

Assuming the density of seawater is 1.03 g/cm3, find the total weight of water on top of a nuclear submarine at a depth of 185 m if its (horizontal cross-sectional) hull area is 3200 m2. In atmospheres, what pressure would a diver experience at this depth? Do you think that occupants of a damaged submarine at this depth cou

A large cylinder tub of water rests at the edge of a table 150.0 cm high.

A large cylinder tub of water rests at the edge of a table 150.0 cm high. The tub is full, it is 110.0 cm tall with top area of 1000 cm^2. If a hole 1.0 cm^2 is made in its side 10.0 cm above the bottom: (a) Determine the speed of the water as it leaves the side. (b) How far will it reach when it hits the ground?

Find the mass of the log...

A log of wood is floating in water with 40% of its volume above the surface of the water. if the volume of the log is 0.4 m^3, find the mass of the log. a. 200kg b. 240 kg c. 160 kg d. 16 kg

Find the height at which the tank is located...

Water is pumped through a pipe to a tank at the top of a building. The pressure of the water at ground level is 2.2* 10^5 Pa and at the tank, the pressure is atmospheric. If the diameter of the pipe is the same throughout, find the height at which the tank is located. Atmospheric pressure may be assumed as 1.0 * 10^5 Pa and G as

Fluid Dynamics and Bernoulli's Equation Problem

A SCUBA diver descends to 30 meters underwater: (a) Write an algebraic expression for the total pressure on the diver at that point and define the various quantities. (b) Calculate the pressure in atmospheres.

Fluid Dynamics & Bernoulli's Equation

Imagine a round container with 4 water spouts at the heights of 10 cm, 20 cm, 30 cm, and 40 cm. The water level is maintained at a 45 cm height by an outside supply. (a) What is the speed of the water out of each hole? (b) Which water stream has the greatest range relative to the base of the container? Justify the answer.

Fluid Mechanics: U Tubes

A U tube open at both ends is partially filled with water. Oil having a density of 750 kg/cubic meter is then poured into the right arm and forms a column L = 5.00 cm high. (a) Determine the difference h in the heights of the two liquid surfaces. The right arm is then shielded from any air motion while air is blown across the

Problem 15.41

Please do not include your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Here's the actual problem: A U-shaped tube, open to the air on both ends, contains mercury. Water is poured into the left arm until the water column is 13.1 cm deep. How far upward from its initial position does the mercury i

Fluid Dynamics

During each heartbeat, approximately 70cm³ is pushed from the heart at an average pressure of 105mm-Hg. Calculate the power output of the heart, in watts, assuming 70 beats per minute. *please explain this as simply as possible- thanks so much :)

Fluid Dynamics

What gauge pressure in the water mains is necessary if a firehose is to spray water to a height of 15m?

Fluid Dynamics

A 5/8 inch (inside) diameter garden hose is used to fill a round swimming pool 6.1m in diameter. How long will it take to fill the pool to a depth of 1.2m if water issues from the hose at a speed of 0.33m/s? *note- please explain this in the simplest way possible if you can! thank you :)

Fluid Statics

A 3.15kg piece of wood (SG= .50) floats on water. What minimum mass of lead, hung from it by a string, will cause it to sink? *note- please explain this in the simplest way possible if you can! thank you :)


The acceleration of a marble in a certain fluid is proportional to the speed of the marble squared and is given in SI units) by a=-3.00 v^2 for v greater than 0. If the marble enters this fluid with a speed of 1.20 m/s, how long will it take before the marble's speed is reduced to half of its initial value?

Find NC for a gold Schottkey diode

Consider a gold Schottkey diode at T=300k formed on a n-type GaAs doped at Nd=5x10^16 cm^-3. Among other things find Phi|n. Phi|n=KT/e*ln(Nc/Nd) I don't understand how to get NC from the information given here. What is NC given the information stated in the problem?

Gear pump volume and pressure difference

The diagram shows a gear pump. The maximum diameter of the gear wheels is 80 mm, the diameter of the roots of the teeth is 50 mm and the tooth width is 20mm. If the pump is driven at 500 rpm, please estimate the volume of oil pumped every minute. If the pressure difference across the pump is 50 bar, what shaft power has to be

Retracting cylinder: How far does an elevator settle as the passengers enter?

A 2" diameter hydraulic ram piston supports an elevator in a 2 story building. When the elevator car is at the first floor, the piston is fully retracted into the cylinder. The piston extends 15 feet to place the empty car at the second floor. Eight passengers who each weigh exactly 150 lb. enter the car. If the bulk modulus

Dimensional Analysis and Dynamic Similtude

Determine the specific gravity of spherical particles, D=(1/200 in), which drop through air at 33degrees F at a speed U of 0.3 ft/s. The drag force on a small sphere in laminar motion is given by 3(pi)(mu)DU. This problem is in Fluid Mechanics by Victor Streeter.

Mass and density of system

Determine the mass of wire having a relative density of 8.77 which must be wrapped around a cork weighing 15 g in order that the cork shall just sink in fresh water. The cork's relative density=0.24.

Fluid mechanics :sample question

Consider the steady flow of a Casson Fluid through a rigid circular pipe of radius R, driven by a pressure gradient . What equation and Boundary conditions govern this motion? Show that the Volume flow rate is given by: ________________________________________________________________ BACKGROUND INFO: Va

Solving for Volume Using Multiple Integration

This is a past exam question. Please help me understand how to go about questions a and b. I think I need some kind of double integral or something? Systems Engineering B The shape of the hull of a small barge of width w, length l and depth d, can be approximated by the multivariable function f(x,y), where:

Determining the cardiac output using Fick's method

Find the cardiac output of a heart using Fick's method given that the concentration of oxygen in the pulmonary artery is 14mL/100 mL (Cin) and in the vein is 20 mL/100 mL (Cout). Oxygen uptake (U) by the lungs is 300 mL/min. Assume that blood flows at a constant rate Q mL/min (the cardiac output).