a.

Less than its specific latent heat of fusion

b.

Equal to its specific latent heat of fusion

c.

Greater than its specific heat of fusion

d.

All of the above depending on the nature of the substance

a.

20 seconds

b.

40 seconds

c.

60 seconds

d.

80 seconds

a.

Coulomb's law

b.

Lenz's law

c.

Faraday's law

d.

Ampere's laws

a.

Their relative masses

b.

Their melting points

c.

The space and forces acting between the molecules

d.

The different molecules in each of them