Produces almost half of out nation's electricity
Momentum = mass x velocity. 45g = 0.045kg. 0.045 x 75 = 3.375 kgm/s
Due to heat , the kinetic energy of the atoms in the substance increases due to which they start vibrating vigorously and the inter-molecular attraction decreases and the substance increases in volume. For example, on boiling water...heat energy imparted makes the volume increase and finally turn into steam or water vapour in air.(The inter-molecular space in air is more than that in water.)
Answer:
The diameter of the hydrogen 
Explanation:
From the given information:
Using the concept of Bohr's Model, the equation for the angular momentum can be expressed as:

Where the generic expression for angular momentum is:
L = mvr.
replacing the value of L into the previous equation, we have:

----- (1)
The electron in the hydrogen atom posses an electrostatic force which gives a centripetal force.
----- (2)
replacing the value of v in equation (1) into (2), and taking r as the subject of the formula, we have:



For ground-state n = 1






Therefore, the diameter of hydrogen d = 2r

