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# Mary builds a simple magnifying telescope using two lenses of focal length 80. cm and 5.0 cm. The ...

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 Mary builds a simple magnifying telescope using two lenses of focal length 80. cm and 5.0 cm. The ... Mary builds a simple magnifying telescope using two lenses of focal length 80. cm and 5.0 cm. The respective diameters are 60. mm and 10. mm.    How many degrees wide does the moon appear through the telescope if it appears only 1/2 degree wide with the naked eye? Question 2The Pioneer probes carry what kind of physical time capsule?    A) a small engraved plaque  B) a gold-plated record containing pictures, multilingual greetings and music  C) a DVD containing pictures  D) these probes do not carry a physical time capsule Question 3The cross-sectional area of an adjustable single loop is reduced from 1.0 m2 to 0.25 m2 in 0.10 s. What is the average emf that is induced in this coil if it is in a region where B = 2.0 T upward, and the coil's plane is perpendicular to B?    A) 21 V  B) 15 V  C) 18 V  D) 12 V  E) 0 V Question 4A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?    A) zero  B) 0.41 mN  C) 0.47 mN  D) 0.52 mN  E) 0.59 mN Question 5A double-slit experiment uses light of wavelength 633. nm with a slit separation of 0.100 mm and a screen placed 2.0 m away.    (a) What is the linear width of the central fringe?  (b) What is the lateral distance between 1st and 2nd order fringes?  (c) What is the angular separation between the central maximum and the 1st order maximum? Read 46 times 3 Replies
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FnsameFnsame
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fokkdsn Author
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6 years ago
 I know you spent a lot of time finding this because I swear it wasn't in my textbook
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6 years ago
 You're partially right, it's found midway in the chapter, but not at all easy to find. Good luck with the rest