About how deep is the photosphere?
A) 300 meters
B) 500 meters
C) 300 km
D) 500 km
Answer: D
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The Murchison meteorite in Australia was found to contain ________
Fill in the blank(s) with correct word
Estimate Comet Tempel 1's diameter, using the scale bar in the photo.
What will be an ideal response?
An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466 . If a ray of light is incident on the air-to-oil surface at an angle of 41.9° with the normal, what is the incident angle at the oil-to-water surface?
a. 30.1° b. 27.1° c. 37.4° d. 41.9° e. 33.5°
General Questions: A bucket is being lowered by a very light rope with a constant downward velocity. The tension in the rope must be
A. equal to the weight of the bucket. B. greater than the weight of the bucket. C. less than the weight of the bucket.