Answer:A
Explanation: number that shows the total atomic mass of the substance
In the presence of air resistance, a watermelon is launched into the air with 100 j of kinetic energy.
Its kinetic energy is less than 100 J when it reaches its starting point. Its kinetic energy decreases as it encounters air resistance and returns to its starting point. In actuality, some of the energy has been lost because of air resistance. Since we use the ball's original height as a point of reference, there is no potential energy when the ball is in its initial state of motion, and K is its kinetic energy. This total energy is conserved if there is no air resistance, therefore when the ball returns to its starting position, its kinetic energy will remain at 100.
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Answer:
83 protons 126 neutrons. Bismuth Atom
Explanation:
The largest number of stable nuclei which could ever exist is the bismuth atom. A nuclei which is higher than that 83 protons is unstable and the nucleus will eventually breakdown through radioactivity.
For this you will need to use the Pythagorean’s theorem
Drawing this out may help!!
If you draw it out, you will get a triangle with a hypotenuse that’s you need to find out.
So 50^2 + 75^2
Square root = 8.67 approx
So displacement is 8.67 metres