The focal length of a converging lens is 10 cm. What is the magnification of this lens if the image is viewed by a relaxed eye with a near point of 25 cm?
A) 0.5
B) 1.5
C) 2.5
D) 3.5
E) 4.5
C
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A good conductor of electricity is a bad conductor of heat
Indicate whether the statement is true or false
PEEK, along with other polymers, such as PPE, PEK, PSU, and PES, is a highperformance _________polymer.
Fill in the blank(s) with the appropriate word(s).
What happens to the charge that leaves a battery in a complete circuit that includes a light bulb?
a. It goes to the light bulb and gets used up. b. It goes through the light bulb and returns to the other end of the battery. c. It accumulates at the farthest point from the bulb. d. It is lost as heat and light. e. It goes to the light bulb or other object and disperses throughout the system.
Shepherd satellites are defined as:
A) satellites in the coma of a comet. B) moons that confine a narrow ring. C) a type of moon that orbits another moon. D) moons that follow the exact orbit of another, larger, moon. E) moons that orbit inside the system of rings.