Questions

The nucleus of hydrogen consists of only a single proton.

Its parts are a single negatively-charged electron that circles a single positively-charged nucleus of the hydrogen atom.

The electron is bound to the nucleus by the Coulomb force.

The main use of salt in the diet is to produce in small amounts the hydrochloric acid required for the digestion of food.

Let the required number of bottles be x.

More weavers, More mats (Direct Proportion)

More days, More mats (Direct Proportion)

$$\begin{gathered} Wavers 4:8 \\ Days 4:8 \end{gathered}$$  :: 4:x

 4 x 4 x x = 8 x 8 x 4

=> x= 8*8*44*4

=>  x = 16.

Outward extension of the shoulder bone is called as the acromion.

Drowsiness is the state of feeling sleepyness and tired in the day time. It affects our senses especially the sense of vision.