Pad and track repair is often necessary. Why?
What will be an ideal response?
Pad and track repair is often necessary because of inexperience or lack of proper desoldering tools and poor technique by the person(s) doing the job.
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The values needed to calculate air volume (cfm) delivered by an air handler equipped with electric heaters
are _____. a. volts, amps, and heater resistance b. fan watts, ohms, and ?T c. heater volts, amps, and ?T d. watts, amps, and heat content
Assume an A horizon depth of 15 cm. A well drained silt loam soil on an Iowa farm has 3.5% organic matter which is about 5% N. Estimate the kg/ha of nitrogen that this soil horizon will make available for plant use from soil organic matter in one year (without the addition of fertilizer)
A) 38 B) 263 C) 175 D) 17.5 E) 88
-6.9 + (-8.5 ) =
A) 15.4 B) -15.4 C) -1.6 D) 1.6
Below is a graph of some samples taken from a sinusoid.
(a) What is the sampling rate f s ?
(b) If these samples have been taken properly (according to Shannon’s sampling theorem), what is the fundamental frequency f 0 of the sinusoid?
(c) The sinusoid from which the samples came can be expressed in the form A cos (2? f 0 t) . What is the numerical value of A?
(d) Specify the fundamental frequencies f 01 and f 02 of two other cosines of the same amplitude which, when sampled at the same rate, would yield the same set of samples.