2 years ago

(This is for science, not physics.)

Physics

2 answers:

Anuta_ua [19.1K]2 years ago

6 0

The answer would be B, 19 protons. Hope this helps!

Inessa [10]2 years ago

6 0

The average mass of potassium is 39 amu and 19 electrons. 19 electrons mean there have to be 19 protons. 39-19=20. Therefore potassium has 20 neutrons. The answer is C, 20.

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nata0808 [166]

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7 0

3 years ago

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stepan [7]

Answer:

36,67 degrees Celsius

Explanation:

The simplest way to approach this problem, given the information provided, is to simply start with the speed difference.

Goal: 353 m/s

Start: 343 m/s (at 20 degrees Celsius).

Difference: 10 m/s