How does the momentum of a dog and a horse, which are both running at the same velocity, compare?

The momentum of horse will be more than the momentum of dog.

Explanation:

Let the momentum of dog and horse be and

Mass of the dog =

Mass of the horse =

Given that velocity with which dog is running is equal to the velocity with which horse is running.

..(1)

..(2)

From (1) and(2) we can say that

Since,the mass of horse is larger than the mass of the dog the momentum of the horse will be more than the momentum of the dog.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.

answer; talc and gypsum;