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timama [110]
2 years ago
4

6.27 The surface of a steel machine member is subjected to principal stresses of 200 MPa and 100 MPa. What tensile yield strengt

h is required to provide a safety factor of 2 with respect to initial yielding: According to the maximum‐shear‐stress theory? According to the maximum‐distortion‐energy theory? [Ans.: (a) 400 MPa, (b) 346 MPa]

Engineering
1 answer:
Kazeer [188]2 years ago
7 0

Answer:

(a) 400 MPa

(b) 346 MPa

Explanation:

See the attached pictures for explanation.

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A 227 pound compressor is supported by four legs that contact the floor of a machine shop. At the bottom of each leg there is a
Ganezh [65]

Answer:

1.312 in

Explanation:

Data provided in the question:

Weight of the compressor, W = 227 pound

Number of legs = 4

Maximum pressure = 42 psi

Now,

Let F be the force taken by the legs

Therefore,

W = 4F

or

227 pound = 4F

or

F = 56.75 pounds

Also,

Force = Pressure × Area

or

56.75 pounds = 42 psi × πr²                      [ r is the diameter of one leg]

or

r² = 0.4301

or

r = 0.656

therefore,

diameter = 2r = 2 × 0.656

= 1.312 in

6 0
2 years ago
CHALLENGE ACTIVITY 1.4.1: Basic syntax errors. Type the statements. Then, correct the one syntax error in each statement. Hints:
Lunna [17]

Answer:

Lets check each statement for the errors.

Explanation:

System.out.println("Predictions are hard.");

This statement has no syntax errors. When this statement is executed the following line will be displayed:

Predictions are hard.

System.out.print("Especially ');

This statement is missing the closing quotation mark. A single quotation mark is placed instead of double quotation mark in the statement.

The following error message will be displayed when this program statement will be compiled:

Main.java:15: error: unclosed string literal

String literals use double quotes. So to correct this syntax error, the statement should be changed as follows:

System.out.print("Especially");

The output of this corrected line is as following:

Especially

System.out.println("about the future.").

In this line a period . is placed at the end of the statement instead of a semicolon ; but according to the syntax rules statements should end in semicolons.

The error message displayed when this line is compiled is as following:

Main.java:15: error: ; expected

Main.java:15: error: not a statement

So in order to correct this syntax error the statement should be changed as following:

System.out.println("about the future.");    

The output of this corrected line is as following:

about the future

System.out.println("Num is: " - userName);

There is a syntax error in this statement because of - symbol used instead of +

+ symbol is used to join together a variable and a value a variable and another variable in a single print statement.

The error message displayed when this line is compiled is as following:

Main.java:13: error: bad operand types for binary operator '-'

So in order to correct this syntax error the statement should be changed as following:

System.out.println("Num is: " + userName);

This line will print two things one is the string Num is and the other is the value stored in userName variable.

So let userName= 5 then the output of this corrected line is as following:

Num is: 5

8 0
2 years ago
Liquid oxygen is stored in a thin-walled, spherical container 0.75 m in diameter, which is enclosed within a second thin-walled,
nadezda [96]

Answer:

Explanation:

the solution is well stated

3 0
2 years ago
Franco is responsible for decomposing the work for a project to host a major conference. Which two things should be use to get s
expeople1 [14]

Answer:

scope statement and deliverables

Explanation:

Francisco Franco Bahamonde was a Spanish general who ruled over Spain from 1939 to 1975 as a dictator., assuming the title Caudillo.

Franco's ideology included the following consistent points:

Authoritarianism

Nationalism

National Catholicism

Militarism, conservatism

Franco is responsible for decomposing the work for a project to host a major conference.

Scope statement and deliverables should be used to get started.

4 0
2 years ago
Natural Convection from an Oven Wall. The oven wall in Example 4.7-1 is insulated so that the surface temperature is 366.5 K ins
lukranit [14]

Answer:

i) Heat transfer coefficient (h) = 7 w/m²k

ii) Heat transfer per meter width of wall

      = h x L x 1 x (Ts - T₆₀)

        = 7 x 0.3048 x (505.4 - 322) = 414.747 w/m

Explanation:

see attached image

8 0
2 years ago
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