Which chemical equation is balanced?
a) 2mg + o2 -> mgo
b) mg + o2 -> 2mgo
c) 2mg + o2 -> 2mgo
d) 2mg + 2o -> 2mgo

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.