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Hoochie [10]
3 years ago
12

Select the correct answer.

Engineering
2 answers:
I am Lyosha [343]3 years ago
8 0

Answer: Ethanol

Explanation:

Brilliant_brown [7]3 years ago
4 0
The answer is either b or e search it up and you will know the answer by definition
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A mixture of two gases has a total mass of 80 kg. One gas has a specific volume of 0.8 m^3/kg and occupies a volume of 40 m^3. T
Nady [450]

Answer:

specific volume = 1.025 m³/kg

Explanation:

given data

total mass m1 +m2 = 80 kg

specific volume = 0.8 m³/kg

occupies volume v1 = 40 m³

other gas specific volume  = 1.4 m³

to find out

How much volume is occupied by the second gas and what is the specific volume of the mixture

solution

we know that density is reciprocal of specific volume and here gas is not interacting

so total specific volume is assume so ratio is total volume to total mass

and

specific volume = \frac{1}{\rho}

here ρ is density

so ρ1  =   \frac{1}{0.8} = 1.25 kg/m³

and ρ2  =   \frac{1}{1.4} = 0.714 kg/m³

and

so m1 = ρ1v1 = 1.25 × 40 = 50 kg

and m2 = 80 - 50 = 30 kg

so

v2 = \frac{m2}{\rho 2}

v2 =  \frac{30}{0.714} = 42 m³

so volume occupied by second das = 42 m³

and

specific volume of mixture will be

specific volume of mixture = \frac{v1+v2}{m1+m2}

specific volume = \frac{42+40}{50+30}

specific volume = 1.025 m³/kg

3 0
3 years ago
Which physical quantity measures fraction of the input energy a machine actually concerts into output energy ?
Dvinal [7]
The answer is Kinetic Power.
4 0
3 years ago
A plate clutch is used to connect a motor shaft running at 1500rpm to shaft 1. The motor is rated at 4 hp. Using a service facto
vazorg [7]

Answer:

(M_t)_{rated}=61.11lb-in

Explanation:

speed of motor (N)=1500 rpm

power=4 hp = 4 \times 0.7457 =2.9828 KW

service factor(k)= 2.75

now,

KW=\frac{2\pi n M_t}{60 \times 10^6} \\2.9828=\frac{2\pi \times 1500 M_t}{60 \times 10^6}\\M_t=\frac{2.9828\times 60 \times 10^6}{2\pi \times 1500 }

M_t= 18,989.09 \ N-mm= 168.06 lb-in

torque rating

(M_t)_{design}=k_s\times (M_t)_{rated}\\168.06= 2.75\times (M_t)_{rated}\\(M_t)_{rated}=\frac{168.06}{2.75} \\(M_t)_{rated}=61.11lb-in

4 0
4 years ago
The use of smart cranes enables transportation companies to do all of the following
IgorLugansk [536]

The use of smart cranes doesn't enable transportation companies to: B. Manually load or unload crates onto a train with several workers.

<h3>What is a smart crane?</h3>

A smart crane can be defined as a mechanical equipment that is designed and developed to automatically load, unload, or control the movement of heavy equipment (objects) from one point to another, especially through the use of a projecting arm or beam.

<h3>The use of smart cranes.</h3>

Generally, various transportation companies use a smart crane to achieve and perform the following tasks:

  • An ability to hire fewer workers to transport crates onto trains or haulage vehicles.
  • An ability to control the movement of heavy objects.
  • An ability to incorporate technological advancements into their routine work or daily practices.

Hence, the use of smart cranes by transportation companies completely abolishes the need to manually load or unload crates onto a train with several workers.

Read more on smart cranes here: brainly.com/question/25845985

3 0
2 years ago
Diffusion of Ammonia in an Aqueous Solution Ammonia (A)-water (B) solution ta 278 K and 4 mm thick is in contact with an organic
Tom [10]

Answer:

Explanation:

The pictures below shows the whole explanation for the problem

4 0
4 years ago
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