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Homework Help for Mechanical Engineering

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Mechanical Engineering

Assuming a linear velocity profile, find the boundary layer thickness the wall shear stress, the displacement thickness and the drag for a flat plate with zero pressure gradient and free stream velocity U0. The plate has length L and width b. Do you have flow separation? If the answer is yes or no, explain why.

Answered
20 May
Mechanical Engineering

Water is delivered at 0.040 m3/s into the open tank using a pump and a 120 mm diameter cast iron pipe. If the system losses through the pipe are 6.4 Nm/N, determine the power output of the pump.

Answered
16 Apr 2020
Mechanical Engineering

A 70 kg bungee jumper jump from the top of a 70 m high bridge and able to touch the water below. The bungee cord has a spring constant of 72.5 N/m, where the unstretched position is when s = 0. Using the principle of work and energy, determine the bungee cord's relaxed length, l, for this jump. If the resistance of the air were not present during the jumping, describe what happened to him?

Answered
30 Mar 2020
Mechanical Engineering

What is a variable in research?

Answered
16 Jan 2020
Mechanical Engineering

How can one become an elevator technician?

Answered
24 Mar 2020
Mechanical Engineering

What is automotive engineering?

Answered
24 Mar 2020
Mechanical Engineering

you have been hired to design a family-friendly seesaw

rom the end of the board when seated. You have selected a child of mass,  (seated furthest from the pivot) and an adult of mass, (seated closest to the pivot) to test out your prototype.

a. Determine the distance d in meters.

b. Determine the magnitude of the force exerted on the pivot point by the see-saw while in use in newtons.

Answered
25 Mar 2020
Mechanical Engineering

What is the marginal cost formula?

Answered
17 Jan 2020
Mechanical Engineering

What should wheel bearing seals be checked for?

A. Smoke

B. Color changes

C. Leaks

D. Gasoline

E. All of the above

Answered
24 Mar 2020
Mechanical Engineering

Inventory costing methods place primary reliance on assumptions about the flow of

A) goods

B) cost

C) resale prices

D) values

Answered
27 Jan 2020
Mechanical Engineering

Share point analysis includes all of the following steps except:

A) Estimate industry sales

B) Compute gross margin per share point

C) Estimate the firm's market share

D) Estimate the firm's return on investment

E) Compute sales revenue per share point

Answered
27 Jan 2020
Mechanical Engineering

Human factors is the study of which characteristics?

 

Answered
27 Jan 2020
Mechanical Engineering

logistics is most closely related to which element of the marketing mix?

a) Product

b) Place

c) Promotion

d) Production

Answered
19 Feb 2020
Mechanical Engineering

Which of the following may occur during an annealing heat treatment?

A. Stresses may be relieved.

B. Ductility may increase.

C. Toughness may increase.

D. A specific microstructure may be produced

E. All of the above.

Answered
17 Apr 2020
Mechanical Engineering

The otto-cycle engine in a Mercedes-Benz slk230 has a compression ratio of 8.8. What is the ideal efficiency of the engine?

Use:

Answered
20 Apr 2020
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