Which force is the most difficult to incorporate into a single unified theory of the fundamental forces?
A) centrifugal forces
B) the armed forces
C) the gravitational force
D) the weak force
E) the electromagnetic force
Question 2
How many joules of energy are used by a 2.0 hp motor that runs for 1.0 hour? (1 hp = 746 W)
What will be an ideal response?