When is mechanical energy NOT conserved? Question 4 options:

When the electricity is turned off

When it is cold outside

When you are in outer space

When there is significant friction or air resistance or other force affecting on the object.

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point

What type of energy conversion occurs when you place your feet near the fire place and they become warm

What sources of error may have contributed to the percent yield not being 100 percent? think about things that may have led to inaccurate measurements or where mass of the product could have been lost if this experiment was conducted in a physical laboratory.