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iVinArrow [24]
3 years ago
14

A tennis ball travelling at a speed of 46m/s with a mass of 58kg. Calculate the kineticenergy​

Physics
1 answer:
Zanzabum3 years ago
7 0

Answer:

its 1/2 the mass of the object times by its velocity ^ 2

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How many neutrons does element X have if its atomic number is 23 and its mass number is 90?
givi [52]

Answer:

67

Explanation:

- The atomic number (Z) of an atom is equal to the number of protons in the nucleus

- The mass number (A) of an atom is equal to the sum of protons and neutrons in the nucleus

Therefore, calling p the number of protons and n the number of neutrons, for element X we have:

Z = p = 23

A = p + n = 90

Substituting p=23 into the second equation, we find the number of neutrons:

n = 90 - p = 90 - 23 = 67

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3 years ago
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A student who was training for a cross country race jogged for 2. 0 hours and covered a distance of 14. 0 kilometers. What was t
FinnZ [79.3K]

The average speed is 116.66m/s.

Given - The path traced is 14km , time for jogging is 2 hrs=120min

To find the average speed-

  1. Speed refers to the ease of the movement and degree of mobility as a result of force application.
  2. Due to this there is involvement of velocity.
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calculations-

Speed= \frac{Distance}{Time}

Speed= 14 000 / 120

= 116.66m/s

To learn more about average speed -

<u>brainly.com/question/27753148</u>

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How many new moons will occur in 2016?
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There will be 13 new moons to occur in 2016 im pretty sure

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Why do the birds and butterflies keep flying into my window? (4 butterflies, 2 birds). I think there after my blood.
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Is that an actual question for school?

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