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Zielflug [23.3K]
2 years ago
5

You are a mechanic in a garage and are working on a carburetor that is made of metal, has a glass inspection window and plastic

gears for the choke. If all three types of material are at the same temperature and each type of material is in contact with the other two, then
A. heat will flow from the plastic to the glass, and from the glass to the metal.
B. heat will flow from the metal to the glass, and from the glass to the plastic.
C. heat will flow from the glass to both the plastic and the metal.
D. no heat will flow between any parts.
Physics
1 answer:
kherson [118]2 years ago
5 0

Answer:

The correct option is;

D. no heat will flow between any part

Explanation:

Here, we are required to know the thermal conductivity of the three materials

1. Metal

2. Glass and

3. Plastic

The thermal conductivity of the above materials are

1. Metal e.g Iron = 0.163 cm² C/cm = 79.5 W/(m K)

2. Glass = 0.0025 cm² C/cm = 0.8 W/(m K)

3. Plastic = 0.19 W/(m K)

Therefore due to the very low conductivity of the glass and the plastic, there will be no heat flow between the parts.

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Which of the following is fact-based science rather than part of a personal belief system?
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2 years ago
Four blocks of weights are required using which any body whose weight is between 1kg and 40 kg can be weighed. Find the four wei
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Answer:

The weights are 1 kg, 3kg, 9kg and 27kg.

Explanation:

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27+9-1=35

27+9+1-3=34

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27

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6 0
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