A very fine sample is placed 0.15 cm from the objective of a microscope. The focal length of the objective is 0.14 cm and of the eyepiece is 1.0 cm. The near-point distance of the person using the microscope is 25.0 cm
What is the final magnification of the microscope? A) -375
B) -242
C) -108
D) -142
E) -100
A
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The purpose of using epicycles and deferents to explain the motion of the planets in the night sky was to account for
a. prograde motion. b. Mercury and Venus' limited angular distance from the Sun. c. retrograde motion. d. non-uniform speed of the planets in their orbits. e. precession of the equinoxes.
An automobile engine operates with an overall efficiency of 12%. How much energy is delivered as waste heat (in gallons of gasoline) for each 10 gallons of fuel burned?
a. 1.2 b. 8.8 c. 6.5 d. 4.7 e. 7.5
The cosmological principle states that the universe is I. expanding. II. accelerating. III. homogeneous. IV. isotropic
a. I and II b. III and IV c. I and III d. II and IV e. I, II, III, and IV
In a/an ____________ binary, the orbits of both stars can be mapped
Fill in the blank(s) with correct word