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Viktor [21]
3 years ago
15

In the simple act of lighting a match, chemical energy stored in the match is transformed into heat and light. What is true abou

t this energy transformation?
Question 4 options:


Most of the energy is lost when the match is struck.


New energy in the form of light and heat is created when the match is struck.


All of the potential chemical energy is transformed into heat and light energy


Some of the chemical energy is transformed into heat and light and the rest is converted into matter.
Physics
2 answers:
icang [17]3 years ago
5 0

When a match stick is struck, some of the chemical energy is transformed into heat and light and the rest is converted into matter.   A match stick has a lot of chemical energy stored in it. When its struck, It start burning. The chemical energy stored in it is transformed into heat energy and light energy. The rest of it turn into ashes and reaction gases.


bazaltina [42]3 years ago
3 0

Answer:

D

Explanation:

I took the test:)

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Photochemical smog is formed when primary air pollutants interact with sunlight.

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Air pollutants are the particles present dissolved in the air, which when inhaled by the organisms can cause serious health issues. These pollutants are :ozone, particulate matter, gaseous oxides, etc. These pollutants majorly affect the respiratory system of the humans.

Therefore, photochemical smog is a form of pollution created when vehicle exhaust interacts with sunlight.

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1 year ago
How long will it take a ball to roll 10 meters along the floor at a speed of 0.5 m/s?
IRINA_888 [86]

Answer:

20 seconds.

Explanation:

The following data were obtained from the question:

Distance = 10 m

Speed = 0.5 m/s

Time =...?

The speed of an object is simply defined as the distance travelled by the object per unit time. Mathematically, it is expressed as:

Speed = Distance /time

With the above formula, we can obtain the time taken for the ball to travel a distance of 10 m as shown below:

Distance = 10 m

Speed = 0.5 m/s

Time =...?

Speed = Distance /time

0.5 = 10/time

Cross multiply

0.5 × time = 10

Divide both side by 0.5

Time = 10/0.5

Time = 20 secs.

Therefore, it will take 20 seconds for the ball to travel a distance of 10 m.

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an object of mass m is traveling at constant speed v in a circular path of radius r. how much work is done by the centripetal fo
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The work done is by the centripetal force on mass m during an angular displacement of 2π revolutions mv²2π /r J

Centripetal force - a force acts on an moving object in circular path.

the centripetal force is given by

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d = 2π

work is done by the centripetal force on mass m during an angular displacement of 2π revolutions is given by:

to calculate work done using equation 1 in 2  we get

W = mv² d/r

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The work done is by the centripetal force on mass m during an angular displacement of 2π revolutions mv²2π /r J

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