Questions

The lightest computer is the tablet.

Silver is the best conductor of both heat and electricity among metals with a thermal conduction value of about 430 W/(mK).

Gold and copper both come respectably close to silver.

Copper being significantly less costly it is often chosen over silver in many applications.

Self pollination occurs in the flowers when the pollen grains of the flower falls on the stigma of the same due to wind or insects like moths and bees. This lead to the inbreeding.

The reactivity of an atom arises from the existence of unpaired electrons in the valence shell.

The each degree of latitude is equals to 111 kms approx (69 miles). As Earth is lightly ellipsoid in shape it changes at equator and poles from 110.5 kms to 111.7 kms respectively.

So, resistance of Wire 2 is R/4 as radius is half of wire 1, so area would be 4 times of wire 1.

Now for resistance in series. R= R1 + R2.

Therefore, Final R= R + R/4 = 5R/4

Chemically marble is known as Calcareous rock as it is composed of carbonate minerals like calcite or dolomite.