The process of changing soild to liquid stat is called A. melting
B. boiling
C. evaporation
D. freezing

When a solid reaches the temperature of its melting point, it can become a liquid. For water, the temperature needs to be a little over zero degrees Celsius (0oC) for you to melt.

Explanation:

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west