You don't want a confound
Answer:

Explanation:
= 1
h = Planck's constant = 
The energy is given by

Energy is also given by

The frequency of light emitted would be 
Answer:
3 up 1 across is the answer
Explanation:
Step one: find the Y intercept( Where the line cuts the y-axis)
X = 0
Y = 3(0) (p.s cross out the (o)
y = 2
Step 2: find the gradient (slope of the line)
rise = 3
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Run 1
d. is wrong...the temperature cannot be measured due to physical changes