In your circuit toolbox, you only have a collection of resistors ( =100 ω, =20 ω, =10 ω) and some switches that can be open or closed. construct a circuit filling in all four boxes, such that the equivalent resistance between a and b is 8 ω.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

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

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.