The amount of heat needed to increase the temperature of a 1-kilogram substance by 1°C is known as the specific heat of the substance.
the formula for specific heat of a substance is given as
c = Q/(m ΔT)
where Q = Heat required to change the temperature by 1°C
m = mass of the substance
ΔT = change in temperature.
the units of specific heat is given as Joules/(kilogram °C)
Krypton is the least metallic. Because it is a noble gas. The elements go from left to right in order of most to least metallic. Krypton is the farthest right out of all of the elements you listed.
Newton’s 3rd law of motion
If the two forces act in the same direction, their resultant is 13N .
If they act in opposite directions, their resultant is 3N .
These are the limits. The resultant is always between 3N and 13N.
So (B), (C), and (D) (3N, 10N, and 13N are possible.)
<em>(A)</em> 2N is not possible.
<u><em>21% of the atmosphere is Oxygen. </em></u>
