False. horizontal can be used for landscape pictures to create a depth effect
You only put a numerical expression in numbers if it is over 100, it the calculation correctly.
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Answer: The component that is used for most amplifiers is the transistor. Semiconductors like gold,copper etc. are used although poor semiconductors like silicon are sometimes used as well. There are many electronic circuits that all under the amplifier category. The classification of an amplifier depends on the size of the signal and configuration.
Chemist is chemist research and experiments
Chemical engineer is engineers concerned with the design and operation of industrial chemical plant