A weight lifter lifts a 1.0 x 102 kg mass 1.5 m in 2.0 s. The power is? A. 9.8 W b B 1.A5 x 103 W C. B 7.4 x 102 W D. 4.9 x 102 W

The air that we breath is made mostly of which gaseous molecule

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .