Answer:
Explanation:
Given

Motor reverse its direction when \omega =0



(b)





This indicates nucleus of an atom constantly positively charged. an atom has an nuteral overall charge because it has the same amount of electrons as protons
Answer:
D. cause the program to stop execution when the expression is evaluated
Explanation:
D. cause the program to stop execution when the expression is evaluated
Answer:

Explanation:
We know that there is a relation between the speed of light ,frequency and wavelength.This relation can be given as
where v is speed of light
is frequency of light
is wavelength of light
In first case we have given λ=655 nm
so using formula 

Hz
In second case we have wavelength 515 nm so by using above formula


In third case we have wavelength 475 nm
so 
