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Naddik [55]
3 years ago
11

Which activity is an example of a chemical change?

Physics
2 answers:
saul85 [17]3 years ago
5 0

C lighting a match is a chemical reaction


melomori [17]3 years ago
3 0

The answer is C because when the chemicals on the tip of a match are heated up from friction it ignites.

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When you add more water to the balloon, it makes it heavier. Therefore it would weigh the balloon down ( increasing mass) and increasing the energy to plummet down. So the answer is B.
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What is kinetic energy? Question 1 options: energy that is due to motion energy that is stored the mass of an object the rate at
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Energy that is due to motion
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Examine the images of the Grand Canyon below. Notice that most of the canyon consists of layers of sedimentary rocks, but if you
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Intense temperature and pressure of regional metamorphism

Explanation:

The process that cause the formation of the Vishnu Schist is the intense temperature and pressure as a result of regional metamorphism.

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  • The schist is a foliated metamorphic rock usually found in areas of moderate to high grade temperature and pressure.
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Contact metamorphism brainly.com/question/1970623

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7 0
3 years ago
Justin Bieber is thrown horizontally at 10.0 m/s from the top of a cliff 122.5 m high.
sveticcg [70]

===>  Distance fallen from rest in free fall =

                                         (1/2) (acceleration) (time²)

                               (122.5 m) = (1/2) (9.8 m/s²) (time²)

Divide each side by (4.9 m/s²):   (122.5 m / 4.9 m/s²)  =  time²

                                                           (122.5/4.9) s²  =  time²

Take the square root of each side:    5.0 seconds


===> (Accelerating at 9.8 m/s², he will be dropping at
                               (9.8 m/s²) x (5.0 s) = 49 m/s
when he goes 'splat'.  We'll need this number for the last part.)


===> With no air resistance, the horizontal component of velocity
doesn't change.

Horizontal distance = (10 m/s) x (5.0 s)  =  50 meters .

===>  Impact velocity =  (10 m/s horizontally) + (49 m/s vertically)

                                 = √(10² + 49²)  =  50.01 m/s  arctan(10/49)

                                 =    50.01 m/s   at  11.5° from straight down,
                                                           
away from the base of the cliff.  

7 0
3 years ago
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Please help, I do not understand what the question is asking
erica [24]
I’m pretty sure it just wants you to list the property’s meaning the material and density
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