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An object with a height of 18cm is placed in front of a converging lens. the image height is -9.0. what is the magnification of the lease.
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The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db
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Which wave is the result of amplification and produces a louder sound
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Which statement correctly describes the interaction between magnetic poles? north and south poles attract each other. north and south poles repel each other. two north poles will attract each other. two south poles will attract each other.
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An object with a height of 18cm is placed in front of a converging lens. the image height is -9.0. w...
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