What is the direction of the magnetic field at point Z?
A wire perpendicular to the screen carries a current in the
direction shown.
up
down
left
right
Into the screen
Out of the screen

Which statement best describes who the period and frequency of electromagnetic was change between gamma rays and microwaves? a) the period and frequency stay the same. b) the period increases and the frequency decreases. c) the period decreases and the frequency increases. d) the period increases and the frequency increases.

Describe the path of a ray that approaches a mirror parallel to the principal axis.

Need in all of themmm only answer if you know plsssss