If you blow across the open end of a soda bottle and produce a tone of 250Hz, what will be the frequency of the next harmonic heard if you blow much harder?

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.

Would corn syrup, molasses, or pancake syrup make a good lubricant in a car engine? explain your answer.

For a particular reaction, ? h = -144.6 kj and ? s = -301.2 j/k. calculate ? g for this reaction at 298 k.