Engine 1 takes in 100 J of heat from a hot reservoir and does 20 J of work. Engine 2 takes in 600 J of heat from
the hot reservoir and does 60 J of work. Is the efficiency
of engine 1 greater than, less than or equal to the
efficiency of engine 2? Explain.

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth's center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above