+1-415-315-9853

info@mywordsolution.com

## Engineering

 Civil Engineering Chemical Engineering Electrical & Electronics Mechanical Engineering Computer Engineering Engineering Mathematics MATLAB Other Engineering Digital Electronics Biochemical & Biotechnology

problem 1: (Hydrostatic pressure on curved 3-D surfaces)

A shark tank in the aquarium has a hemispherical glass viewing “bubble” jutting into the water from the side wall. The radius of the bubble is 1m, starting 2m below the water surface. What is the horizontal and vertical resultant force of the water on the bubble?

problem 2: (Buoyancy of a floating body)

Ice has a density 91.7% of liquid water.  For an ice cube (1 cm per side):

a) what fraction of the volume floats above the water surface at standard pressure?
b) How does this fraction change if the air pressure increases by 2 psi?

problem 3: (Buoyancy of a submerged body; compressibility of air)

A grade 4 science student inverts a cup full of air into a water tank. If it takes 1 lb of force to hold the cup down 3 inches below the surface, how much force does it take to hold the cup down at a depth of 5 feet? Assume (1) the cup has negligible weight, (2) the temperature of the air is always the same as the surrounding water temperature.

problem 4: (Buoyancy; force & moment balance)

A partially submerged, homogeneous timber is 0.15m by 0.35m in cross-section. What is the specific weight of the timber and the tension in the rope holding one end down?

problem 5: (Rigid body acceleration)

A tank of water accelerates down an icy frictionless ramp of angle α. What angle (θ) does the water make with the horizontal at equilibrium?

problem 6: (Rigid body rotation)

Derive the equation for the shape of the surface zsurf (rsurf) for a rigid-body rotation of water at angular speed ω (rad/sec).

2) prepare out force balance in r and z directions

3) Integrate using the method we did in class:

F = ma in r-direction gives:  P(r,z) = P(r) + f1(z)
F = ma in z-direction gives:  P(r,z) = P(z) + f2(r)

4) Solve for z(r) at surface, where P = Patm = constant

problem 7: (Bernoulli equation along a streamline)

Water flows from station (1) to (2) around an expanding corner pipe, 3m high.
The speed along the center streamline is 10 m/s at (1) and 5 m/s at (2).

a) What is the pressure difference between the stations (and which is higher)?

b) List all key assumptions inherent in your analysis.

Mechanical Engineering, Engineering

• Category:- Mechanical Engineering
• Reference No.:- M91407

Have any Question?

## Related Questions in Mechanical Engineering

### Using the equations for stress transformationa confirm the

Using the equations for stress transformation, a. confirm the angles that define the planes of maximum and minimum shear stress b. determine the maximum and minimum values of the shear stress

### Consider the top part of the balloon to be half of a

Consider the top part of the balloon to be half of a spherical pressure vessel. What is the ratio of the normal stress across a vertical seam to the normal stress across a seam inclined 45 degrees?

### A mixture of 210 x 10-3 g of o2 388 x 10-3 mol of n2 and

A mixture of 2.10 X 10 -3 g of O2 3.88 X 10-3 mol of N 2 . And 5.25 X 10 -3 molecules of CO are placed into a vessel of volume 5.25 L at 12.5°C. a. Calculate the total pressure in the vessel. b. Calculate the mole fracti ...

### Design design all members of the 6 span truss each span is

Design: Design all members of the 6 span truss each span is 12 ft long, the height of the truss is 16 feet shown if w = 10,000 pounds. The allowable maximum tensile stress P/A is 1000 psi where P is the force in the memb ...

### The number of molecules crossing a unit area per unit time

The number of molecules crossing a unit area per unit time in one direction is given by where n is the number of molecules per unit volume and v is the average molecular velocity. As the average molecular velocity is app ...

### A typical engine alternates between compression and

A typical engine alternates between compression and expansion of a gas. If during the compression stroke the entropy of the gas is reduced by 0.20JK -1 , what is the minimum change to the entropy of the surroundings?

### 1 how large as a fraction of the supported weight w must

1. How large (as a fraction of the supported weight W) must the weight w of the forearm and hand be to change the analysis done under the assumption of weightlessness? 2. What sort of simple measurement or experiment cou ...

### A beam with a rectangular cross section has dimensions as

A beam with a rectangular cross section has dimensions, as defined in Fig. 8.13, of b = 40and t = 10 mm. The beam is made of 7475-T7351 aluminum and is subjected to a bendingmoment of M = 900 N·m. (a) If a through-thickn ...

### A potential flow source having an intensity of 10m2s placed

A potential flow source having an intensity of 10m2/s, placed in the point of Cartesian coordinates (1;0), and a sink having identical intensity, placed in the point (-1;0), are combined with a uniform flow at 25 m/s, in ...

### The space between two very long parallel plates separated

The space between two very long parallel plates separated by a distance h is filled with a fluid with viscosity where μ0 is a constant and n is a constant exponent. The top plate slides to the right with a constant speed ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro