Dish antennas are capable of very high signal gains by focusing energy onto a very narrow ___________
A. beamwidth
B. bandwidth
C. current
D. transmission line
A
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An air-conditioning unit provides 125 kW of cooling while using power at a rate of 58 kW. Determine the coefficient of performance of this air conditioner (refrigerator).
Given: Q?C = 125 kW; W? = ?58 kW What will be an ideal response?
The septic tank holds the solid waste while it is decomposed by ____ action.
A. bacterial B. gravitational C. electrical D. viral
When using biological controls for insects:
A) pesticides can be used with caution regarding the biological being used. B) the introduction of a foreign organism creates an environmentally unfavorable situation. C) in general there is good control of most species. D) pesticides cannot be used at all in order to protect the biological being used.
A person drives a car 49 kilometers to one city, 84 kilometers to another, and 99 kilometers home. What is the total distance?
A. 222 B. 227 C. 232 D. 242