You transform 950 J of chemical energy into mechanical energy to push a sofa. It took you 5.0 s to move the sofa, what was your power?

d) physical means can be used to separate the components of air.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.