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mestny [16]
4 years ago
12

I need to present a proposal for a device that minimizes heat transfer. I need help PLEASE

Physics
1 answer:
eimsori [14]4 years ago
3 0
Engineers must understand the thermal properties of materials to be able to predict the performance of any given material over its lifetime in a specific application. Engineers apply their understanding of the thermal properties of materials to the design of efficient heat transfer materials for better engines, spacecraft and electronic devices. They also examine the thermal properties of insulation to design more efficient buildings and homes. Engineers develop ways to minimize heat transfer from a motor to the surrounding environment. Often they find ways to insulate the motor to decrease the convective heat transfer from the motor. They design a refrigerator to keep heat out of the inside, as well as keep the refrigerator contents cool. hope this helped
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How does the resulting cell at the end of asexual reproduction compare to the original cell
lina2011 [118]

1. At the end of asexual reproduction the resulting cell is an exact genetic copy of the original cell.

2. During inter phase the cell copies its DNA, and grows to an appropriate size where it is safe for the cell to split.

3. After meiosis, the resulting daughter cells are 4 genetically different haploid daughter cells.

4. During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. The two haploid gamete bring different traits together, they also shares some DNA. This makes each daughter cell unique.

4 0
3 years ago
Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.
BigorU [14]

Heat transfer in a closed system is the addition of changes in internal energy and the total amount of work done by it.  The final energy of the system is 35.5kJ.  

<h3>What is heat transfer? </h3>

Heat transfer is the transfer of heat energy due to temperature differences.

The paddle-wheel paintings are quantities of workdone, 500 N.m or 0.5kJ.

The preliminary (initial) power of the device is 10 kJ.

Total warmness transferred in the course of the method is 30 kJ

Total warmness misplaced in the course of the method to the encompassing air is 5 kJ.

The energy of the system is given as:

The energy of the system = Energy in - Energy out

The energy of the system = Initial energy + Energy transferred + Work done - Energy lost

Energy of the system = 10 + 30 + 0.5 - 5 kJ

Energy of the system = 35.5 kJ

Read more about energy:

brainly.com/question/13881533

#SPJ1

6 0
2 years ago
How many neutrons does element X have if its atomic number is 33 and its mass number is 80?
nikdorinn [45]
The number of neutrons is equal to the atomic mass, or mass number, minus the atomic number:
80 - 33 = 47 neutrons. 
4 0
4 years ago
Mona's grandfather had been complaining of poor vision for many days. One day Mona took him to the eye specialist and got his ey
Ostrovityanka [42]

Answer:

The problem with her grandfather's eye can be long sightedness and short sightedness

Explanation:

Given that,

Mona's grandfather had been complaining of poor vision for many days.

We know that,

Refractive eye surgery is small surgery.

We need to find the problem with her grandfather's eye

Using given data,

Mona's grandfather had been complaining of poor vision for many days.

So, the doctor did refractive eye surgery of her grandfather's eye.

Due to this surgery, Mona's grandfather can see things clearly.

Refractive eye surgery is a method for correcting vision.

This surgery used for better vision.

This surgery is possible for long sightedness and short sightedness.

Hence, The problem with her grandfather's eye can be long sightedness and short sightedness

3 0
3 years ago
Moby lifted Tim off the ground a distance of 2 meters using a force of 2N. How much work did Moby do?
DaniilM [7]

Answer:

4 J

Explanation:

As I guess,

From the equation,

work done = force × distance travelled

                   =  2        ×    2

                   = 4 J

There are no conversions since all are given in the standard form.

7 0
3 years ago
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