Explain why charcoal grills or charcoal fires should never be used for heating inside the house.

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2