If shirley pushes one end of a desk to the right with a force of 12.0n and anfernee pushes the desk at the same time to the left with a force of 19.0n and the desk has a mass of 4.50kg. what is the net force on the desk?

Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o

Need only answer if you think you know it

What property of a wave determines the pitch? what property of a wave determines the volume? describe your reasoning and include the ways the simulation and tone generator influenced your thinking. will mark brainiest if your answer does make sense to the question asked.