Classify the following alkali metals, alkaline earth metals, transition metals: calcium, gold, iron, magnesium, plutonium, sodium, and uranium.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0