Ill give brainliest pls !

how are electromagnetic waves different from mechanical waves?

select one:
a. electromagnetic waves are all high frequency; mechanical waves are all low frequency.
b. electromagnetic waves can travel through a vacuum; mechanical waves require a medium.
c. electromagnetic waves are visible; mechanical waves are invisible.
d. electromagnetic waves always reflect; mechanical waves always refract.

Brades exam guidelines exam instructions billing & payments & support question 6 of 20 : select the best answer for the question use this illustration to answer the question below. forms & resources al programs 9 ww linics 6. in the circuit shown in the figure above, suppose that the value of r, is 100k, and the value of r2 is 470 kq. at which of the following locations in the circuit would you measure the highest voltage with your meter? rvices 999999 a. between points b and c b. between points a and b c. between points b and e d. between points a and c eredu mark for review (will be highlighted on the review page) mend < < previous question next question