It depends on the size of the box.
-- If it's one of the boxes printed on a sheet of graph paper,
then he should report the measurement in millimeters.
-- If it's the box that his new smartphone arrived in, then
he should probably use centimeters.
-- If it's the box that the new tractor was shipped to his
grandfather's farm in, then meters is the best unit.
Answer:
dV/dt = 9 cubic inches per second
Explanation:
Let the height of the cylinder is h
Diameter of cylinder = height of the cylinder = h
Radius of cylinder, r = h/2
dh/dt = 3 inches /s
Volume of cylinder is given by

put r = h/2 so,

Differentiate both sides with respect to t.

Substitute the values, h = 2 inches, dh/dt = 3 inches / s

dV/dt = 9 cubic inches per second
Thus, the volume of cylinder increases by the rate of 9 cubic inches per second.
The answer is definitely letter C. They are both located in the nucleus. Their summation define the mass of one (1) atomic mass unit of a particular element. For example, for carbon atom it has 6 protons and 6 neutrons. Therefore the atomic mass of carbon is 12.
Electrical
Electrical would be the energy that involves the flow of positive changes