4. What will happen to the amount of kinetic energy if an object's mass decreases?
A. The kinetic energy will increase I
B. The kinetic energy will decrease
C. The kinetic energy will remain constant

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th