Technician A says that when a liquid changes to a vapor, heat is absorbed. Technician B says that when a vapor changes to a liquid, heat is released. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
C
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A signal shown in Figure 7.33 amplitude modulates a carrier c(t) = cos (50t). Precisely plot the resulting modulated signal as a function of time.
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If the spring brakes are on when should you push the brake pedal
a. Only when driving down hill b. Only on a slippery road c. Never
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Each livestock class is broken down into three pairs called the:
a. first, second, and third c. top, middle, and bottom b. gold, silver, and bronze d. no answers
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The safety valve discharges automatically at the pressure of:
a. 100 psi b. 50 psi c. 150 psi
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