Alight source emits light with dominant wavelengths in the range of 650 to 690 nm. what is the principle color of light emitted by the source?

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

Rohit is trying to tune an instrument

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?