An unstable atomic nucleus has a mass of 17.010-27kg, and starts out at rest. when it decays, it the original nucleus disintegrates into three particles. one particle has a mass of 5.0010-27kg and velocity of 6.00106 jm/s, and a second particle has a mass of 8.4010-27kg and velocity of 4.00106 im/s. calculate (a) the velocity of the third particle and (b) the total increase in kinetic energy as a result of the decay. (note that this kinetic energy actually comes from the mass of the original nucleus, according to e = ∆mc2, but only a tiny amount of mass is turned into energy, so we don’t have to worry about it for this problem.)

Part a)

Part b)

Explanation:

As per momentum conservation we know that there is no external force on this system so initial and final momentum must be same

So we will have

Part b)

By equation of kinetic energy we have

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

measuring things 1 litre of water