Suppose that f(t) = u(t) – u(t-2). Determine f(t)*f(t).
What will be an ideal response?
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Determine the amount of rebar needed for the foundation walls shown in Figures 11.36 and 11.37. Allow for two inches of cover. Add 10 percent for lap and waste to the continuous bars.
What will be an ideal response?
An automobile leasing company has a contract with a new car dealer to do major repairs for $720 per car. The leasing company estimates that for $400,000, it could buy equipment to service their own cars at a cost of $300 per car. If the equipment will have a salvage value of 10% of its first cost after 15 years, the minimum number of cars that must require major servicing each year to justify the equipment at a MARR of 10% per year is closest to: (choose one)
(a) 88 (b) (c) 128 (d) 143
What makes a material a good electrical conductor?
A) Having a large number of free protons B) Having eight electrons in the outer shell C) A large number of free electrons D) Having very few electrons
How does the heating-cycle charge compensator aid the heating cycle?
A) It makes the gas line cold. B) It stores the unneeded refrigerant. C) It fills with hot air. D) It raises the temperature of the refrigerant.