Answer:
B). the temperature of B increases more than the temperature of A
Explanation:
For constant volume process, relation between molar heat capacity and temperature is given by,

where, ΔQ is the amount of heat required
m is the mass of the gas
is heat capacity at constant volume
ΔT is the change in temperature.
For a constant energy ΔQ,

Given, 
∴ 
Thus the temperature of gas B increases more than the temperature of gas A.
Answer:
A pendulum is weight suspended from a pivot so that it can swing freely
Answer:
Explanation:
Given
mass of cannon and cart is 
Spring constant 
mass of Projectile 
Launch Velocity of cannon 
Launch angle 
As the External Force is zero therefore we can conserve momentum
Initially both Projectile and cannon is at rest
Conserving momentum in horizontal direction




i.e. cannon is moving in opposite direction of Projectile
Elements are identified by the nuclei of the atoms of which they are made. For example, an atom having six protons in its nucleus is carbon, and one having 26 protons is iron. ... Heavy elements can be formed from light ones by nuclear fusion reactions; these are nuclear reactions in which atomic nuclei merge together. This is how they are formed