Which most likely is a casual relationship? A. An experimenter showed different causes for two patients' lung cancer. B. One experiment showed that all cancers can be cured by a new drug. C. Experimenters show a link between adult-onset diabetes and obesity. D. Experimenters show statistical data on diabetes drugs.

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.

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

How do you know how many valence electrons an atom has?