An airplane is flying over the South Pole. Which arrow correctly shows the direction gravity pulls the plane? Airplane underneath Earth with four arrows around it. An arrow is pointing from the top of the plane towards space labeled one. An arrow behind the plane pointing away from the plane labeled two, an arrow below the plane pointing towards Earth labeled three, and an arrow in front of the plan pointing in the direction of the motion of the plane labeled four.

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As , plants meet their needs for making food from air, soil, water, and the sun's energy in a process called there are plants called grow high in trees without here are words to put in the blanks. 1.) producers 2.) consumers 3.) chloroplasts 4.) epiphytes

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

If a simple machine reduces the strength of a force, what must be increased?