Author Question: Explain the advantages and disadvantages of superinsulated homes. What will be an ideal ... (Read 94 times)

yoroshambo · **on:** Jul 28, 2018

Explain the advantages and disadvantages of superinsulated homes.

What will be an ideal response?

Question 2

A pendulum bob on a long string is raised 1.1 m above its lowest point. When it is let go, we can determine the speed of the bob as it passes through its lowest point even if we have no idea of its mass.

What will be an ideal response?

ryrychapman11 · **Reply #1 on:** Jul 28, 2018

Answer to Question 1

The advantages include increased comfort level because the home is less drafty
and reduced energy cost because of greater insulation. Disadvantages include possibilities
for mold growth in wetter rooms, buildup of pollutants from ordinary living such as
cooking, etc.

Answer to Question 2

This is correct. The potential energy is mgh. The kinetic energy at the bottom is 12mv2 . Because there is a factor of mass in both, and because one is transformed into the
other, the result is independent of mass.