Which type of radiation on the electromagnetic spectrum has the greatest energy and why?

Gamma rays

Explanation:

Have the highest energies. The shortest wavelengths, and the highest frequencies.

i think the answer is a, hope this : )

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west