All residential alarm-sounding devices must have a minimum rating of _____.
a. 60dB at 10'
b. 75dB at 10'
c. 85dB at 10'
d. 120dB at 10'
c. 85dB at 10'
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All electric circuits must have a complete path for electrons to flow through, a source of electrons, and some electric device (load) that requires electric energy for its operation.
Answer the following statement true (T) or false (F)
Splitting the body from the mind is:
A) our normal state of being B) not possible C) logical D) all of the above
The three essential requirements for a useful electric circuit are:
A) A power source, a magnetic field, and a path for current flow. B) A magnetic field, a path for current flow, and a switch. C) A power source, a path for current flow, and a switch. D) A power source, a path for current flow, and an electrical load.
How many pounds of CO2 are created by burning one gallon of gasoline?
A. 5 B. 10 C. 15 D. 20