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maw [93]
3 years ago
10

Replacing standard incandescent light bulbs with energy-efficient compact fluorescent lightbulbs can save a lot of energy. Calcu

late the amount of energy saved over 10 h when one 60 W incandescent lightbulb is replaced with an equivalent 18 W compact fluorescent lightbulb.
Chemistry
1 answer:
EleoNora [17]3 years ago
3 0

Answer:

a) 1512000 Joules

b) 5040 seconds = 84 minutes = 1.4 hours

Explanation:

Power saved y replacing bulbs = 60-18 = 42 W = 42 J/s

Time the bulb is used for = 10 hours

Energy saved during this time

42×10×60×60 = 1512000 Joules

Saved energy by replacing standard incandescent lightbulbs with energy-efficient compact fluorescent lightbulbs in 10 hours is 1512000 Joules

b) Power the plasma TV uses = 300 W = J/s

\frac{1512000}{300}=5040\ s3001512000=5040 s

Time a plasma TV can be used for with the saved energy is 5040 seconds = 84 minutes = 1.4 hours.

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Answer:

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E: fission is used in nuclear weapons as it is easier to accomplish then fusion  bombs

Explanation:

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3 years ago
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Mandarinka [93]

Answer:

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6 0
3 years ago
5) Some students believe that teachers are full of hot air. If I inhale 2.2 liters of gas at a temperature of 180 C and it heats
ahrayia [7]

Given :

If I inhale 2.2 liters of gas at a temperature of 180 C and it heats to a temperature of 380 C in my lungs.

To Find :

The new volume of the gas.

Solution :

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We know, relation between temperature and volume in constant pressure is :

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Putting all given values in above equation, we get :

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3 years ago
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