Since mars is smaller, how can it have an equal landmass?

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.

Aballet student who learns with the of his instructor is demonstrating learning.

Match each scenario to the form of energy it represents