The Yerkes refracting telescope has a 1-m diameter objective lens of focal length 20 m and an eyepiece of focal length 2.0 cm. What is the magnification of the planet Mars as seen through this telescope?
a. 800
c. 400
b. 1000
d. 200
B
Physics & Space Science
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During an eclipse of the Sun the high ocean tides on Earth are
A) extra high. B) extra low. C) not significantly different.
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Buoyant force is greater on a submerged 10-newton block of
A) lead. B) aluminum. C) same on each
Physics & Space Science
Wave interference occurs for
A) sound waves. B) light waves. C) water waves. D) all of the above E) none of the above
Physics & Space Science
The system shown is released from rest and moves 50 cm in 1.0 s. What is the value of M? All surfaces are frictionless
a.
0.42 kg
b.
0.34 kg
c.
0.50 kg
d.
0.59 kg
e.
0.68 kg
Physics & Space Science