Which element has the greatest number of valence electrons? a. silicon b. chlorine c. sodium d. magnesium

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?

Me ! since green bounces off red, this must be collision a.elastic b.explosion c.inelastic

Awave is propagating from left to right in a medium. the particles in the medium are also vibrating from left to right. what kind of wave does this describe? a. longitudinal wave b. transverse wave c. mechanical wave d. electromagnetic wave