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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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qaws [65]

To solve this problem, let us recall that the formula for gases assuming ideal behaviour is given as:

rms = sqrt (3 R T / M)

where

R = gas constant = 8.314 Pa m^3 / mol K

T = temperature

M = molar mass

Now we get the ratios of rms of Argon (1) to hydrogen (2):

rms1 / rms2 = sqrt (3 R T1 / M1) / sqrt (3 R T2 / M2)

or

rms1 / rms2 = sqrt ((T1 / M1) / (T2 / M2))

rms1 / rms2 = sqrt (T1 M2 / T2 M1)

Since T1 = 4 T2

rms1 / rms2 = sqrt (4 T2 M2 / T2 M1)

rms1 / rms2 = sqrt (4 M2 / M1)

and M2 = 2 while M1 = 40

rms1 / rms2 = sqrt (4 * 2 / 40)

rms1 / rms2 = 0.447

 

Therefore the ratio of rms is:

<span>rms_Argon / rms_Hydrogen = 0.45</span>

7 0
3 years ago
If a ball speeds up as it is rolling down a hill, the forces acting on it must be -
VMariaS [17]

Answer:

the forces acting on it must be strong because gravity is pushing the ball down

Explanation:

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disa [49]

Just divide the both, you will get the answer!

does it sound rude?

im sorry for that!

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Alexeev081 [22]

Answer:

The atomic mass unit is 1/12 of an atom of carbon 12, and is a very small amount to represent in kilograms:

1m_{u}=1.66054x10^{-27}kg

m_{u} is atomic mass unit.

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