A steam turbine has an efficiency of 40%. A steam engine has an efficiency of 25.0%. Suppose both devices are provided with 1000 J of thermal energy. How much more useful work will the steam turbine do?

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

During the apollo moon missions, astronauts were concerned about the effects of newton's third law of motion when: o a. they ejected waste water, because they were concerned that it would push them off course. o b. they reentered earth's atmosphere, because they were carrying heavy moon rocks. o c. they took off from earth, because a large force was required to generate large acceleration. o d. they detected incoming space debris, because the inertia of the debris could damage their ship.

Ln finding the density of liquid why is the method of using a density bottle more accurate than the one of using a measuring cylinder