What speed should a galaxy move with respect to us so that the sodium line at 589.0 nm is observed at 589.6 nm?

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?

The maximum shear stress and maximum flexural stress occur at the same location along a beam subjected to a non-uniform bending load. a)-trune b)- false