Carlota does 2000 J of work on a machine. The machine does 500 J of work. What is the efficiency of the machine?
4%
O 25%
O 75%
O 400%

Current 1 of 8.4 a runs for 240 seconds and then stops. current 2 is 10.5 a. how long does current 2 have to un to deliver the same amount of charge as current 1? 88.28 192 s 2016 s 21,000 s

What is the speed of an object at a given moment?

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