An object is pulled northward at 20 N and southward at 15 N. What is the direction and force of the object?

It moves northward at 5N

Explanation:

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge