The period of a light wave is equal to
a. wavelength xf requency
b. amplitude x wavelength
C. amplitude / frequency
d. 1 -frequency

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

The law of reflection states that the angle of reflection is equal to the angle of