Two radio antennas are separated by 1.60 mm . Both broadcast identical 750 MHz waves.
Part A) If you walk around the antennas in a circle of radius 10.0 mm , how many maxima will you detect?

20

Explanation:

Given the following information:

Expression for path difference is given as:

And for wavelength as:

#substitute the values for wavelength:

#Substituting the values for the ratio of distance to the wavelength;

Hence,

#there are total number of 4 meeting points for maximum constructive interference. Therefore, total number of maxima points are 5×4=20.

found in the nucleus

has mass of one amu

i think the answer is a, hope this is right, that would be my best guess.