Sound transmission class (STC) is a measure of the
A) sound-insulating property of a material with respect to airborne sound.
B) sound-insulating property of a material with respect to structure-borne sound.
C) sound-reflecting property of a material.
D) sound-absorbing property of a material.
A) sound-insulating property of a material with respect to airborne sound.
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Which type of heat transfer occurs in a gas-fired water heater tank when the burner is not firing and tends to move hot water toward the top of the tank?
a. conduction b. convection c. radiation d. emissivity
Explain the synchronous shift register.
What will be an ideal response?
Most of the transgenic animals produced to date are _____
a. Hamsters c. Snakes b. Mice d. Dogs
Technician A says that gasoline is a complex blend of hydrocarbons. Technician B says that gasoline is blended for seasonal usage to achieve the correct volatility for easy starting and maximum fuel economy. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician