Question

match the following ch 6 ​

Answer 1

Answer:

If the area of an equilateral triangle is 24√3 m power 2 , then the perimeter is

Answer 2

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Solution:

• Wool = Bad conductor

• Convection = Not possible in vaccum

• Radiation = Possible in vaccum

• Black surface = Good absorber of heat

• Polished surface = Good reflector of heat

Knowledge booster:

• Wool is bad conductor because it not helps in conduction of heat
• Convection is flow of heat in fluids. There is nothing in space to support convection
• Heat radiate in vaccum due to radiation
• Black surface is good absorber of heat as it absorb more light energy
• Polished surface is good reflector of heat as it acts as mirror to reflect heat easily