Strictly speaking, the sum of the angles on a triangle equals 180 degrees
A) in flat space.
B) on a spherical surface.
C) on a saddle-shaped surface.
D) all or any of the above
E) none of the above
Answer: A
Physics & Space Science
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An object is 12 cm in front of a concave spherical mirror, and the image is 3.0 cm in front of the mirror. What is the focal length of the mirror?
A) 0.25 cm B) 15 cm C) 4.0 cm D) 2.4 cm E) 1.3 cm
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The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force
The waves with the largest frequency are __________ and _________.
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What kind of plate boundary separates the South American Plate from the African Plate?
What will be an ideal response?
Physics & Space Science
One pg (picogram) of 40K has how many nuclei?
a.
b.
c.
d.
e.
Physics & Space Science