Give the three reasons for cultivating a garden
What will be an ideal response?
The main purpose of cultivation is to control weeds and to loosen and aerate the soil.
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An ideal gas, initially at 30°C and 100 kPa, undergoes the following cyclic processes in a closed system:
What will be an ideal response?
(a) In mechanically reversible processes, it is first compressed adiabatically to 500 kPa, then cooled at a constant pressure of 500 kPa to 30°C, and finally expanded isothermally to its original state.
(b) The cycle traverses exactly the same changes of state, but each step is irreversible with an efficiency of 80% compared with the corresponding mechanically reversible process. Note: The initial step can no longer be adiabatic.
Calculate Q, W, ?U, and ?H for each step of the process and for the cycle. Take 
and 
Fixed ladders must be equipped with safety devices if the total length of the climb equals or exceeds _____.
a. 8' b. 16' c. 24' d. 32'
Why do electronic EPRs provide better case temperatures than mechanical EPRs?
a. EEPRs are more accurate at sensing suction line pressures. b. EEPRs sense the case discharge air temperature rather than suction pressure. c. EEPRs can open and close much faster than mechanical EPRs.
When testing the ECT sensor with the connector disconnected, the technician should select what position on the DMM?
A) Ohms B) Hz (hertz) C) DC volts D) AC volts