You are to consider the following projects. Which project would you approve if each project creates the same income? Assume i = 8%, and a period of 15 years.
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Answer the following statement(s) true (T) or false (F)
1. A rotating magnetic field can be produced with only one phase. 2. The current relay contains a coil with a few turns of large wire and a set of normally closed contacts. 3. All dual-voltage single-phase motors contain two sets of start windings. 4. When the current of the AC waveform increases from zero toward its positive peak, a magnetic field is created in the pole piece. 5. Single-phase synchronous motors require DC excitation current.
What is the average specific heat of the substance tested over the temperature range from 0°C to 10°C? What is the average specific heat from 90°C to 100°C? What is the average specific heat over the entire range tested? Describe how you would use this data to derive an expression for the specific heat as a function of temperature.
A flow calorimeter like is used with a flow rate of 
of the fluid being tested and a constant temperature of 0°C leaving the constant - temperature bath. The steady-state temperature at section two 
is measured as a function of the power supplied to the heater (P), to obtain the data shown in the table below.
Flow calorimeter
?What may need to be done as the nozzle and electrode wear?
A. ?Tighten the nozzle and loosen the electrode to reduce the gap. B. ?Increase the cutting gas flow. C. ?Increase the machine voltage. D. ?Reduce the cutting speed.
When pedicuring, the proper time to insert toe separators is before:
What will be an ideal response?