2. determine if work is being done on the objects in the following three situatios:
a. lifting a spoonful of soup to your mouth
b. holding a stack of books motionless over your head
c. letting a pencil fall to the ground
3. descride how a ramp can make lifting a box easier without changing the amount of work being done.

2. In order for work to be done, force must be applied and the object must be moving in the same direction as the force.
a. Yes
b. No
c. Yes
3. Easier simply means applying less force. A ramp is longer than the hight of the lift but the force is less when using a ramp and so if you calculate how much work is being done in this case, it should be the same.

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.