4. A string is tightly stretched beween two chairs that are 1.25 metres apart. The velocity of the wave is observed to be 7.50
metres per second.
(a) What would be the frequency of the fundamental wave?
(b) What would be the frequency of the third harmonic.​

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

How much energy is made when a pice of wood burns. how do you know