A cylinder measuring wide and high is filled with gas and the piston pushed down with a steady force. Calculate the force on the piston if the pressure in the gas is measured to be . Write your answer in units of kilonewtons. Be sure your answer has the correct number of significant digits.

the answer is alpha particles hope i you

idk what is it? is this a question that you know the answer or u dont

answer seismograph;

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.