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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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Bezzdna [24]

Answer:

11.28 N toward the center of the track

Explanation:

Centripetal force: This is the force that tend to draw a body close to the center of a circle, during circular motion.

The formula for centripetal force is given as,

F = mv²/r................................ Equation 1

Where F = force, m = mass of the toy car, v = velocity, r = radius

Given: m = 108 g = 0.108 kg, v = 7.75 m/s, r = 57.5 cm = 0.575 m

Substitute into equation 1

F = 0.108(7.75²)/0.575

F = 11.28 N

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7 0
3 years ago
The car travels 25 miles in the first 0.5 hours
Westkost [7]

Answer:

\huge\boxed{\sf v = 50\ miles / hr}

Explanation:

<u>Given Data:</u>

Distance = S = 25 miles

Time = t = 0.5 hours

<u>Required:</u>

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<u>Formula:</u>

v = S/t

<u>Solution:</u>

v = 25 / 0.5

v = 50 miles / hr

\rule[225]{225}{2}

Hope this helped!

<h3>~AnonymousHelper1807</h3>
4 0
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olga_2 [115]
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