The balloon has traveled 30 meters up from the bicyclist and since it's rising 5 meters per second, 2 seconds later it will travel 10 meters higher. 2 seconds later the bicyclist will travel 20 meters away. so 10+20+30= 60 meters away from each other.
Bohr changed the model of the atom by proposing that electrons travelled in circular orbits with specific energy levels.
Sodium has 11 protons and Chlorine has 17.
<span>When 1 mol of glucose is burned, 2802.5 KJ of energy is released.
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