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3 years ago

A paragraph about What is engineering? please

Engineering

2 answers:

Gre4nikov [31]3 years ago

8 0

Answer:

Engineering is the application of science and math to solve problems. Engineers figure out how things work and find practical uses for scientific discoveries. Scientists and inventors often get the credit for innovations that advance the human condition, but it is engineers who are instrumental in making those innovations available to the world.

Evgesh-ka [11]3 years ago

8 0

Engineering is the application of science and math to help solve problems with constructing something (:

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A 20 mm diameter rod made of ductile material with a yield strength of 350 MN/m2 is subjected to a torque of 100 N.m, and a bend

vodka [1.7K]

Answer:

a) 42.422 KN

b) 44.356 KN

Explanation:

Given data :

Diameter = 20 mm

yield strength = 350 MN/m^2

Torque ( T ) = 100 N.m

Bending moment = 150 N.m

Determine the value of the applied axial tensile force when yielding of rod occurs

first we will calculate the shear stress and normal stress

shear stress ( г ) = Tr / J = [( 100 * 10^3) * 10 ] / $\pi /32$ * ( 20)^4

= 63.662 MPa

Normal stress( Гb + Гa ) = MY/ I + P/A

= [( 150 * 10^3) * 10 ] / $\pi /32$ * ( 20)^4 + 4P / $\pi * 20^2$

= 190.9859 + 4P / $\pi * 20^2$ MPa

a) Using MSS theory

value of axial force = 42.422 KN

solution attached below

b) Using MDE theory

value of axial force = 44.356 KN

solution attached below

5 0

3 years ago

Which battery produces more volts per cell, maintenance type or maintenance free ?

Sonja [21]

Double aa battery. It’s is a very high bolted battery that can power up a lot of things

7 0

3 years ago

Some soil has a discharge rate of 0.1 L/s, an area of 11 m2, and a hydraulic head that is given empirically by the function H =

Artist 52 [7]

Answer:

3.03 * 10 ⁻⁴ m/s

Explanation:

see attached picture for explanation.

3 0

3 years ago

suppose we number the bytes in a w-bit word from 0 (less significant) to w/8-1 (most significant). write code for the followign

sammy [17]

Solution:

typedef unsigned char *byte_pointer;

static int int_of_bit (byte_pointer x, int loc)

{

return(x[loc] << loc*8);

}

static int replace_byte(unsigned int a, int loc, unsigned int b)

unsigned int a_loc = int_of_bit((byte_pointer) &a , loc);

unsigned int b_loc = (b << loc*8);

a -= a_loc;

a += b_loc;

return a;

}

Explanation:

This takes two ints in hex format, one with 8 bits (0x00000000) and one with 2 bits (0x00) then places the 2 bit hex into the 8 bit at a given location.

EX: replace_byte(0x00000000, 1, 0xFF) return 0x0000FF00

First thing first, it looks like you have some mixup:

" one with 8 bits (0x00000000) and one with 2 bits (0x00)*- what you mean is nibble not bits. Each hex character (0-9, A-F) represent 4 bits (16 possible combination), and is called a "nibble".

0x0000000 is 4 bytes. 0x00 is 2 bytes.

Next, you say "takes two ints in hex format" - your function takes two ints in any format. You're just choosing tp express them in hexidecimal. C++ doesn't care if you specify numbers in hex, decimal, octal, binary, etc.

8 0

3 years ago

A company, studying the relation between job satisfaction and length of service of employees, classified employees into three le

Wewaii [24]

Answer:

Below see details

Explanation:

A) It is attached. Please see the picture

B) First to calculate the overall mean,

μ=65∗25/75+80∗25/75+95∗25/75

μ=65∗25/75+80∗25/75+95∗25/75 = 80

Next to calculate E(MSTR) = σ2+(1/r−1) ∑ni(μi−μ)^2 = 5634

And E(MSE) = σ^2= 9

C) Yes, it is substantially large than E(MSE) in this case.

D) If we sampled 25 employees from each group, we are likely to get a F statistics to indicate differences of job satisfactions among three types of length of service of employees.

3 0

3 years ago