Which is a hypothesis?

A.) Clouds are observed in the sky.

B.)You can relate the shape of a cloud to other objects,

C). Why do clouds produce rain?

D.)Clouds are made of water droplets.

Drag each tile to the correct box. tiles bra i sequence

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 anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (