When a wave enters a new medium at an angle, it bends, or refracts. is the bending of a wave as it enters a new medium at an angle other than 90 degrees. Refraction occurs because waves travel at different speeds in different mediums. ... You have probably noticed the refraction of light waves in water.
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Since the amount of matter does not effect average kinetic energy, it must have a higher average kinetic energy. (b)
On Earth, the acceleration due to gravity is (-9.8 meters per second) per second.
If the school, the roof, and the pencil are on Earth,
then after 3 seconds, the pencil's speed is
[ (-9.8 meters per second)/second ] times [ 3seconds ] = <u>-29.4 meters per second </u>
Answer:
C
Explanation:
From the question we are told that a vector on the x and y plane face their negative axis
Generally in the x and y plane thr negative y axis is made to face down opposite the positive y axis
Whilst the negative x axis faces the left which is also alternate to the positive x axis
Generally A vector pointing towards the x and y negative axis fro the origin (0) will definitely be in the third quadrant