An object can become electrically charged if it gains or loses which particle:
A volts
C atoms
B neutrons
D electrons

electrons

Explanation:

When an atom gains or loses  an electron, the atom becomes charged and thereby called an ion. if an atom gains electron it results in a negative charge , the atom is then called an anion. When an atom losses electron it results in a positive charge, the atom is then called a cation

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a) cold, dry

explanation:

continental polar masses are cold and dry air masses because the cold air cannot hold much moisture. as they move into warmer air, they can trigger precipitation.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000