When work is done by an applied force, the object's energy will change. in this interactive, does the work cause a kinetic energy change or a potential energy change?

Which of the following changes to a pipe would increase the conductance by a factor of 12? 1.quadrupling the length and tripling the radius.2.reducing the length by a factor of and doubling the radius.3.tripling the length and reducing the radius by a factor of .4.reducing the length but a factor of and doubling the radius.

Asample of a gaseous substance changes into a liquid

Which best represents the law of conservation of mass ?