An oscilloscope display indicates that the period of a digital pulse train is 40 ?s. What is frequency of this waveform?
A) 25 kHz
B) 40 MHz
C) 2.5 kHz
D) Cannot be answered from the information provided.
A
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Bus drop safety springs are used to maintain the proper tension on the horizontal and vertical cord runs. These springs are available with 40-, 80-, and ____-pound ratings.
A. 100 B. 120 C. 150 D. 180
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The roots from forests prevent _____ and help to provide clean water
a. soaking in c. rain b. runoff d. habitat
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Which of the following hormones is an amino acid derivative?
A) ADH B) melatonin C) oxytocin D) growth hormone E) prolactin
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? Identify and state the historical significance of Isabella of Castile.
What will be an ideal response?
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