CRITICAL THINKING
EQUATIONS
100
What is the speed of light?
186,000 mi/sec 300,000 km/sec 300,000,000 m/sec
100
What is the speed of light?
300,000 km/sec
200
What type of wave causes sunburn and why?
ultraviolet because it has high energy and can penetrate the skin
200
What is the formula for finding the the size of a wavelength?
upside down y: Y=s/f
300
What are the three types of waves the sun emits?
infrared, visible and ultra-violet
300
What is the formula for finding the speed of an electromagnetic wave?
s=f(Y) upside down y
400
if you are in a pitch dark room, do any electromagnetic waves exist? explain
Infrared. Your body emits these as warmth.
400
What is the answer to #19 p.629
2.07 km
500
What is the answer to #21 p.629?
460,000 hz
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