Do the Following Calculation

question 47

Multiple Choice

Do the following calculation. How many significant figures are justified for the answer?  ______= 6.02 + 5.119 + 0.04218

• A)three
• B)four
• C)five
• D)seven

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Definitions:

Electromagnetic Energy

Refers to a form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space.

Ultraviolet Light

A type of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays.

Absolute Threshold

The minimum intensity of a stimulus that one can detect 50% of the time.

Brightness

Lightness or luminance; the dimension of visual experience related to the amount (intensity) of light emitted from or reflected by an object.