A blacksmith cools a 1.2 kg chunk of iron initially at a temperature of 650°C by tricking 15°C water over it. All the water boils away, and the iron ends
up at a temperature of 120°C. How much water did the blacksmith tricke over the iron? Let = 0.47 x 10 kg. ). water = 4.19 x 10 /kg.
*). and L = 2256 x 100/kg

we need to know the time interval during which the force acts. impulse of force = momentum change

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force