38.You walk from your house to the store 1.0 km in 25 minutes, and then you spent 10 minutes in the store. In your way back home, you stop after 15 minutes walking in your friend house, which is located at 0.76 km from the store. Your displacement was:

0.24 km

Explanation:

Total time taken = 25 + 10 + 15 = 50 mins

Total distance covered  = 1.0 km( initial distance ) + 0.76 km( final distance ) = 1.76 km

therefore the displacement of the individual = 1 - 0.76  = 0.24 km

displacement is the difference between final distance and initial distance covered by an individual and it is a vector quantity

electrical to thermal

less than one you can't create energy