An aluminum bar 30 cm long and 3 cm by 4 cm on its sides is connected between two large metal blocks at temperatures of 135°C and 20°C, and energy is transferred from the hotter block to the cooler...

An aluminum bar 30 cm long and 3 cm by 4 cm on its sides is connected between two large metal blocks at temperatures of

135°C and 20°C, and energy is transferred from the hotter block to the cooler block at a rate 1. If instead the two blocks

were connected by an aluminum bar that is 20 cm long and 3 cm by 2 cm on its sides, what would be the energy transfer

rate?