When light passes at an angle to the normal from one material into another material in which its speed is lower
a. it is bent toward the normal to the surface.
b. it always lies along the normal to the surface.
c. it is unaffected.
d. it is bent away from the normal to the surface.
Ans: a. it is bent toward the normal to the surface.
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An ion is released from rest and moves due to the force from an electric field from a position in the field having a potential of 14 V to a position having a potential of 8 V. The ion:
a. can have either a positive or a negative charge. b. must be neutral. c. must have a positive charge. d. must have a negative charge.
A standing wave is likely produced when
A) two waves overlap. B) a wave reflects upon itself. C) the speed of the wave is zero or near zero. D) the amplitude of a wave exceeds its wavelength.
All of the ________ now observed must be primordial
Fill in the blank(s) with correct word
A net horizontal force is required for a body to move in a horizontal circle
Indicate whether the statement is true or false