The energy used by a 100-watt light bulb in 1 hour is
a. 0.01 J.
b. 360,000 J.
c. 100 J.
d. 6,000 J.
e. none of the above.
b
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Light is refracted through a diamond. If the angle of incidence is 30°, and the angle of refraction is 12°, what is the index of refraction?
A. 1.3 B. 2.4 C. 2.6 D. 1.8 E. 0.4
Which of the following is calculated by dividing the ratio of exposed subjects to nonexposed subjects in the case group by the ratio of exposed subjects to nonexposed subjects in the control group?
What will be an ideal response?
Which one of the following sets of characteristics describes the image formed by a plane mirror?
A) real and inverted B) real and upright C) virtual and upright D) virtual and inverted E) virtual and larger than the object
Due to our ozone layer, ultraviolet astronomy must be done from space
Indicate whether the statement is true or false