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soldi70 [24.7K]
3 years ago
11

Two brothers are skateboarding down a hill. Boy 1 has a mass of 100 kg and is moving 10 meters per second. Boy 2 has a mass of 2

00 kg and is moving at a speed of 5 m/s. Which kid has the most Kinetic Energy and why??

Chemistry
2 answers:
sukhopar [10]3 years ago
6 0
The second brother Brother because he is much heavier and therefore has more energy to be released hope this helps
nirvana33 [79]3 years ago
5 0

Answer:

Boy 1 has more kinetic energy (5000J) than boy 2 (2500J) by 2500J

Explanation:

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0.374 g

Explanation:

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In this model of a molecule of ammonia, nh3, how many covalent bonds are represented? ammonia
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3 years ago
What is the percentage sodium in sodium oxide
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Sodium Oxide= Na2O
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4 0
3 years ago
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pyrite is a mineral composed of 46.5 mass % iron and 53.5 mass % sulfur. determine the empirical formula for calcocite.
padilas [110]

The empirical formula for pyrite is FeS2.

HOW TO CALCULATE EMPIRICAL FORMULA:

  • The empirical formula represents the simplest whole number ratio of constituents element of a compound. The empirical formula of pyrite can be calculated as follows:

46.5 mass % Fe = 46.5g of Fe

53.5 mass % S = 53.5g of S

  • Next, we divide each element's mass value by its molar mass

Fe = 46.5g ÷ 56g/mol = 0.83mol

S = 53.5g ÷ 32g/mol = 1.67mol

  • Next, we divide each mole value by the smallest (0.83mol)

Fe = 0.83mol ÷ 0.83 = 1

S = 1.67mol ÷ 0.83 = 2.014

Approximately, the ratio of Fe to S is 1:2. Therefore, the empirical formula of pyrite is FeS2.

Learn more at: brainly.com/question/14044066?referrer=searchResults

3 0
2 years ago
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