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4 years ago

What is the difference between available and unavailable energy?

Engineering

1 answer:

Anon25 [30]4 years ago

5 0

Answer:

The heat absorbed portion that is transformed into work is therefore helpful and accessible for our use, hence it is termed as available energy. But the energy or heat which is of no use is termed as unavailable energy.

Explanation:

A engine requires heat from the reservoir and transforms portion of it into function. The extra heat is expelled (generally atmosphere) to cold reservoir. The refused heat can't be equal to zero, as per the 2nd law of thermodynamics. The heat absorbed portion that is transformed into work is therefore helpful and accessible for our use, hence it is termed as available energy. But the energy or heat which is of no use is termed as unavailable energy.

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A 0.66 ft steel bar undergoes a stretch of 0.75 in in an axial direction. What is the strain? Use three significant figures (fou

Lapatulllka [165]

Answer:

The strain is 0.0947.

Explanation:

Strain is the ration of change in dimension to the original dimension under application of load. Depending upon load, the bar may stretch or compress. So, the strain can be negative in case of compression or positive in case of tension.

Step1

Given:

Original length of the steel bar is 0.66 ft or 7.92 in.

Stretch in the bar is of 0.75 in.

Calculation:

Step2

Strain is calculated as follows:

$e=\frac{\bigtriangleup l}{l_{o}}$

$e=\frac{0.75}{7.92}$

e = 0.0947

Positive sign is for stretching condition of the bar.

Thus, the strain is 0.0947.

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3 years ago

A CUSTOMER BRINGS HER CAR INTO THE

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a bc if the bulbs are in a bad conditio. than u know that u dont have to remove it but only repair it.

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3 years ago

Read 2 more answers

4. Which of the following are used for vehicle and/or major component identification?

AleksAgata [21]

Option C

VIN (vehicle identification number) are used for vehicle and/or major component identification

<h3>Explanation:</h3>

American automobile producers have practiced a vehicle identification number (V.I.N.) to name and recognize motor vehicles. They serve to retain an indication of obstacles, ownership exchanges, and prevent crime. This practice also posted the superimposed major component parts and replacement parts to be noted for each of the classes of vehicles.

Depending on the transport major parts may be marked with the vehicle’s VIN. The component part labels are composed of the alike material as the Federal Safety Certification Labels and are also planned to self destruct if excluded.

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4 years ago

1. You use

lorasvet [3.4K]

4-ways tell me if I’m wrong

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3 years ago

Suggest suitable materials of construction for the following applications and provide justifications.

Sergio039 [100]

Answer:

a) 316 stainless steel

b) 316 stainless steel

c) Carbon steel

d) stainless steel 316

e) stainless steel 316

f ) Carbon steel

Explanation:

A) A 10,000 M' storage tank for Toluene

The best material for building this tank is 316 stainless steel this is because it is relatively cheaper than other materials such as Hest Alloy C while still maintaining the required tensile strength needed to build the storage tank for Toluene

B) A 5.0 m' tank for storing a 30% w/w aqueous solution of sodium chloride

The suitable material for building this tank is 316 stainless steel as it is cheaper than Titanium and Hest Alloy C and it is compatible with sodium chloride

C) A 2 m diameter, 20 m high distillation column, distilling acrylonitrile

The best material for constructing this column is Carbon steel and this is because it has a very high compressive strength which is approximately . 1320 MPa

D) A 100 m storage tank for strong nitric acid.

The best material is stainless steel 316 and this is due to its high tensile strength

E) 316 stainless steel

F) Carbon steel is suitable for building this absorption column because it has a very high compressive strength which is approximately . 1320 MPa

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3 years ago