What is the efficiency of an engine that does 288 j of work and exhausts 72 j of heat while taking in 360 j of heat? a. 25% b. 20% c. 10% d. 80% !

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

Answer fast for brainliest! what type of image is formed by a refracting telescope? an enlarged, upside-down virtual image a reduced-size, right-side-up virtual image a reduced-size, right-side-up real image an enlarged, upside-down real image