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3 years ago

Can metal be recognised as a good heat shield? why or why not??

Chemistry

2 answers:

fiasKO [112]3 years ago

4 0

Answer:

In summary, because of metal's unique properties, it can be an excellent heat shield (such as when aluminum foil is wrapped around warm food) or an excellent heat sink (such as when metals fins are attached to computer chips).

Molodets [167]3 years ago

3 0

Explanation:

Convection requires a fluid material that can move around. Typically, metals are solid, not fluid, and therefore do not participate in convection. ... This means that metal can be either a good heat shield, a mediocre heat shield, or a bad heat shield, depending on how we use it.

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2 years ago

A student increases the temperature of a 200^3 cm balloon from 60°C to 120°C. What will the new volume of the balloon be? (Be ca

Darina [25.2K]

Explanation:

Given parameters:

Initial volume V1 = 200cm³

Initial temperature = 60°C

Final temperature = 120°C

Unknown:

Final volume = ?

Solution:

According to Charles law, at constant pressure, the volume of a given mass of gas is directly proportional to temperature.

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3 years ago

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3 years ago

How long must $542 be invested at a rate of 7% to earn $303.52 in interest

yulyashka [42]

The number of years that must be invested at a rate of 7 % to earn$ 303.52 in interest is

8 years

calculation

by use of the formula A = P (1+ rt)
where : A is the final amount = 542 + 303.52 =$ 845.52

P is the principal money to be invested = $ 542

r= rate= 7/100=0.07

t= time required

=$ 845.52=$ 542( 1+ 0.07 t)

open the bracket
= $845.53= $542 + $37.94 t

like terms together

=$ 845.53 -$542 = $37.94 t

=$303.52 =$37.94 t

divide both side by $37.94

= $303.52/ $ 37.94 = $37.94t/$37.94

t= 8 years

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3 years ago

Can metal be recognised as a good heat shield? why or why not?? ​

Can metal be recognised as a good heat shield? why or why not??