Boy X and Boy Y both move backward in opposite directions.
If you just type "<span>What is the chemical formula for mercury(I) nitrate?" into google you get the answer but HG(NO3)2 is the correct one.
sorry no one helped you in time hope you passed anyway</span>
It protects us from the magnetic/electrical radiation that comes from the sun. High radiation periods coincide with solar storms.
Answer:

Explanation:
Distance travelled = 200 metre
Time taken = 24 second
Velocity = ?
<u>Finding </u><u>the</u><u> </u><u>velocity</u><u> </u>



Hope I helped!
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