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jarptica [38.1K]
3 years ago
7

10 pts

Chemistry
2 answers:
devlian [24]3 years ago
5 0

Answer:

2,178J

Explanation:

The formula is [ KE = 1/2mv² ] where m = mass and v = velocity.

KE = 1/2(4)(33)²

KE = 1/2(4)(1089)

KE = 1/2(4356)

KE = 2178

Best of Luck!

Kipish [7]3 years ago
3 0

Answer:

The answer is

<h2>2178 J</h2>

Explanation:

The kinetic energy of an object given it's mass and velocity can be found by using the formula

KE =  \frac{1}{2} m {v}^{2}  \\

where

m is the mass

v is the velocity

From the question

m = 4 kg

v = 33 m/s

The kinetic energy is

KE =  \frac{1}{2}  \times 4 \times  {33}^{2}  \\  = 2 \times 1089 \\  = 2178 \:  \:  \:  \:  \:  \:  \:  \:

We have the final answer as

<h3>2178 J</h3>

Hope this helps you

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Answer:

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Explanation:

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This means that the amount of matter stays the same.

Then, the reaction is

                    A      +      B      ⇒       C      +      D

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mass                              

of reactants      38 g                              ?          mass of products, but it must be

                                                                          equal to the mass of products

Then                14g + x = 38

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4 0
3 years ago
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Answer:

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The correct option is<u> 'c'.</u>

Explanation:

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