Aheat engine produces 8200 j of heat while performing 3200 of useful work. what is the efficiency of this engine? (i'm doing something wrong.)

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

The mini-refrigerator fire was most likely caused by what type of wiring?