Engine I takes in 100 J of heat from a hot reservoir and does 20 J of work. Engine 2 takes in the same amount of
heat from the hot reservoir and does 25 J of work. Is the
efficiency of engine 1 greater than, less than or equal to
the efficiency of engine 2? Explain.

answer: 0.20

explanation: this can only be the answew because all the other measuremnets are not close

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.

the inner core.

good luck: )

klicker