Thin Lenses: Starting from very far away, an object is moved closer and closer to a diverging lens, eventually reaching the lens. What happens to its image formed by that lens? (There could be more than one correct choice.)
A. The image gets closer and closer to the lens.
B. The image gets farther and farther from the lens.
C. The image always remains virtual.
D. The image eventually changes from real to virtual.
E. The image keeps getting larger and larger.
Answer: E
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Two particles A and B have identical charge Q. For a net force of zero to be exerted on a third charged particle it must be placed:
A) midway between A and B B) on the perpendicular bisector of the line joining A and B but away from the line C) on the line joining A and B, not between the particles D) on the line joining A and B, closer to one of them than the other E) at none of these places (there is no place)
A person makes ice tea by adding ice to 1.8 kg of hot tea, initially at 80°C. How many kilograms of ice, initially at 0°C, are required to bring the mixture to 10°C?
A) 1.0 kg B) 1.2 kg C) 1.4 kg D) 1.5 kg E) 1.7 kg
In the eighteenth and nineteenth centuries, the rare transits of ________ were critical in determining the astronomical unit's length
Fill in the blank(s) with correct word
Two large parallel conducting plates are 8.0 cm apart and carry equal but opposite charges on their facing surfaces. The magnitude of the surface charge density on either of the facing surfaces is 2.0 nC/m2 . Determine the magnitude of the electric potential difference between the plates
a. 36 V b. 27 V c. 18 V d. 45 V e. 16 V