When an object is in circular path then the net force on the object is always towards the center of the path
Now here the position of the tin is overhead above us
So the center of the circular path will lie just below it
So the net force is also in the direction of the center
So here we will have
Net force downwards towards the center
And this is along the direction of gravity
Now the correct answer is
<u>parallel to gravity</u>
(263.1 years) x (half-life / 87.7 years) = 3 half-lifes
In 3 half-lifes, (1/2 x 1/2 x 1/2) = 1/8 of the atoms in a sample remain unchanged.
That's 12.5% that remain unchanged.
The other 87.5% of the atoms in the sample have decayed, and changed to either other isotopes of plutonium or into atoms of other elements.
Y e s i t ' s c a l l e d " t h e e f f o r t f o r c e "
H o p e t h i s h e l p s
:) L O L
The answer is A. Proton. Protons have the opposite charge to electrons, which have negative charges.