An object 1.80 cm tall is placed 100 cm in front of a diverging lens having a focal length of magnitude 25 cm. A converging lens with a focal length of magnitude 33.33 cm is placed 30 cm past the first lens
What is the lateral magnification of this system of lenses?
A) 0.40 B) -2.5 C) 2.5 D) -0.40 E) 1.0
D
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The dense disks of gas and dust such as those seen around the stars in Orion are sites where planets could be forming right now
a. True b. False Indicate whether the statement is true or false
When a spinning ice skater pulls in his arms, he spins faster because ________
A) there exists an unbalanced reaction force B) there is less friction with the ice C) there is less friction with the air D) his angular momentum must be conserved, so reducing his radius must increase his speed of rotation
At what speed, relative to the frame of the observer making the measurement, is the length of a meter stick 0.60 m?
A) 0.80c B) 0.60c C) 0.50c D) 0.70c E) 0.90c
A runner runs on a circular path of radius 10 m. What is the magnitude of the displacement of the jogger if he runs
(a) half-way around the track? (b) all the way around the track? What will be an ideal response?