Two forces, a 60.-newton force east and an 80.-newton force north, act concurrently on an
object located at point p, as shown.
determine the magnitude of the resultant force, r.

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). light from a hydrogen lamp illuminates a diffraction grating with 520lines/mm , and the light is observed on a screen 1.5m behind the grating. part a what is the distance between the first-order red and blue fringes? express your answer to two significant figures and include the appropriate units.

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?