Match the person or item with the correct description. Atomic model contained a sphere of positive charge with negatively charged electrons within it.
Oa. Aristotle
Ob. Thomson
Oc. Bohr
Od. Rutherford
Oe. Chadwick
Of. Democritus
Og. Dalton

Argon, neon, and xenon are examples of

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

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?