A 175 g piece of iron and a 175 g piece of aluminum are placed in a hot water
bath so that they are warmed to 99.7/C.
The metal samples are removed and
cooled to 21.5/C. Which sample
undergoes the greater heat change?
(Al; -12.3 kJ Fe; - 6.08 kJ)

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?