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The isotopic symbol of unknown particle is

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

For the given fission reaction:

To calculate A:

Total mass on reactant side = total mass on product side

228 = A + 224

A = 4

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

90 = Z + 88

Z = 2

Hence, the isotopic symbol of unknown particle is

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)