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Serga [27]
3 years ago
15

When a candle burns, which forms of energy does the chemical energy in the candle change to? A. light and sound B. heat and soun

d C. light and heat D. electric and light
Physics
2 answers:
Nutka1998 [239]3 years ago
8 0

Answer:

C. light and heat

Explanation:

When the candle is burnt, the chemical energy is converted to light and heat.

Light is easily visible. Heat is dependent on the size of the candle. If a small candle is burnt heat will not be much and can only be felt if one is very close to its flame.

Sound waves and electrical energies are not created while a candle burns.

Ratling [72]3 years ago
3 0

Answer:

When a candle burns, the chemical energy in the candle changes to light energy and heat energy.<em> (C)</em>

Explanation:

Did you ever light a candle and have sound or electricity come out of it ? ?

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Specific gravity, also called relative density, is the ratio of the density of a substance to the density of a reference substance. By this definition we need to find out the ratio of density of the object of mass m to the density of the surrounding liquid.

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<u>Weight in air</u>

W (air) = mg, where g is the gravitational acceleration

<u>Weight with submerged with only one mass</u>

m(s)g + Fb = mg + m(b)g, <em>consider this to be equation 1</em>

where Fb is the buoyancy force

Weight with submerged with both masses

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<u>equation 1 – equation 2 would give us</u>

m(s)g – m(os)g = Fb’ – Fb

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m(s)g – m(os)g = D(l) x V x g

m(s) – m(os) = D(l) x V

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<u>Substituting V into the above equation we get</u>

m(s) – m(os) = [D(l) x m)/ D(b)]

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D(b)/D(l) = m/[m(s)-m(os)], where D(b)/D(l) denotes the specific gravity

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