Answer : The mass of a sample of water is, 888.89 grams
Explanation :
Latent heat of vaporization : It is defined as the amount of heat energy released or absorbed when the liquid converted to vapor at atmospheric pressure at its boiling point.
Formula used :

where,
q = heat = 2000 kJ =
(1 kJ = 1000 J)
L = latent heat of vaporization of water = 
m = mass of sample of water = ?
Now put all the given values in the above formula, we get:

(1 kg = 1000 g)
Therefore, the mass of a sample of water is, 888.89 grams
Increase your heart rate ! I hope this helps
10 is the correct answer. Velocity Formula is s= d/t (s=speed, d= distance, t= time)
Answer:
electric potential
Explanation:
Electric potential energy is defined by work done to move a charge very slowly from infinite to a given position.
So it is given as

now we need to find the physical quantity which is defined as potential energy of a charge particle divided by its charge.
So it is given as

so here energy to bring a unit test charge to move very slowly from infinite to a given position is define as electric potential of that given point
so relation is given as
