Question

The time taken to cover a distance of "x" km downstream is equal to time taken to cover "x-18" km upstream. upstream speed is less than downstream speed by 6km/hr. if the speed of boat in still water is 9 km/hr, then find the value of "x"

Answer 1

a) Draw the electronic configuration and represent the formation of

magnesium oxide. Write its formula. (Magnesium - atomic number 12,

Oxygen - atomic number 8)

b) Name any two particles emitted during the process of radioactivity.