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antiseptic1488 [7]
4 years ago
6

A resistance spot welding operation is performed on two pieces of 0.040 in thick sheet steel with unit melting energy of 150 Btu

/in3. It takes 9500 A and 0.17 sec to complete a weld nugget of φ0.190 in and 0.060 in thick.
Assume the resistance of 100 micro-ohms.a) Calculate the average power density in the interface area defined by the weld nuggetb) Find the percentage of energy generated that went into formation of the weld nugget (i.e, calculate the ratio Eweld / Esource)
Engineering
1 answer:
erma4kov [3.2K]4 years ago
8 0

Answer

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.  

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. The job of applications engineer for which Maria was applying requires (a) excellent technical skills with respect to mechanic
Hitman42 [59]

Answer:

  1. Tell us about your self
  2. Are your confident that you are the right candidate for this position
  3. why should i hire you
  4. Do you like working under supervision
  5. How do you like to work ( in a group or individually )
  6. What is your ultimate workplace goal
  7. what are your future plans
  8. What do you expect from the Organization when given the job
  9. Do you like taking on critical problems
  10. How long can you work in this position

Explanation:

For a job of applications engineer which require excellent technical skills, commitment  to working , ability to deal well and confidently with customers a willingness to travel and very intelligent and well-balanced personality.

The ten questions you should ask Maria to determine if she is qualified for the job are :

  1. Tell us about your self ( functions you have )
  2. Are your confident that you are the right candidate for this position
  3. why should i hire you
  4. Do you like working under supervision
  5. How do you like to work ( in a group or individually )
  6. What is your ultimate workplace goal
  7. what are your future plans
  8. What do you expect from the Organization when given the job
  9. Do you like taking on critical problems
  10. How long can you work in this position
5 0
3 years ago
A reagent added to the analyte solution that changes color when the reaction is complete
Novosadov [1.4K]

Answer:

rfvvvgfvbjjjjbvgggvvvhhjjvvvv

Explanation:

hhbbbjbnjjjjjknnnnbcfvhggcvbgffvvhbvbhbbbnbbhhhhj

6 0
3 years ago
The clepsydra, or water clock, was a device that the ancient Egyptians, Greeks, Romans, and Chinese used to measure the passage
Nookie1986 [14]

Suppose a tank is made of glass and has the shape of a right-circular cylinder of radius 1 ft. Assume that h(0) = 2 ft corresponds to water filled to the top of the tank, a hole in the bottom is circular with radius in., g = 32 ft/s2, and c = 0.6. Use the differential equation in Problem 12 to find the height h(t) of the water.

Answer:

Height of the water = √(128)/147456 ft

Explanation:

Given

Radius, r = 1 ft

Height, h = 2 ft

Radius of hole = 1/32in

Acceleration of gravity, g = 32ft/s²

c = 0.6

Area of the hold = πr²

A = π(1/32)² ---- Convert to feet

A = π(1/32 * 1/12)²

A = π/147456 ft²

Area of water = πr²

A = π 1²

A = π

The differential equation is;

dh/dt = -A1/A2 √2gh where A1 = Area of the hole and A2 = Area of water

A1 = π/147456, A2 = π

dh/dt = (π/147456)/π √(2*32*2)

dh/dt = 1/147456 * √128

dh/dt = √128/147456 ft

Height of the water = √(128)/147456 ft

3 0
4 years ago
Ice slurry is being transported in a pipe (k = 15 W/m∙K, Di = 0.025 m, Do = 0.08 m, and L = 5 m) with an inner surface temperatu
grandymaker [24]

Answer:

Please see the attached file for complete answer.

Explanation:

Download pdf
3 0
4 years ago
An inventor proposes an engine that operates between the 27 deg C warm surface layer of the ocean and a 10 deg C layer a few met
SpyIntel [72]

Answer:

Engine not possible

Explanation:

source temperature T1 = 300 K

sink temperature T2= 283 K

therefore, carnot efficiency of the heat engine

η= 1- T_2/T_1

\eta= 1-\frac{T_1}{T_2}

\eta= 1-\frac{283}{300}

= 0.0566

= 5.66%

claims of work produce W = 100 kW,  mass flow rate = 20 kg/s

Q=mc_p(T_1-T_2)

Q=20\times4.18(300-283)

= 1421.2 kW

now \eta= \frac{W}Q}

now \eta= \frac{100}{1421.2}

=7%

clearly, efficiency is greater than carnot efficiency hence the engine is not possible.

8 0
4 years ago
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