Ms. Kim reseeded her hay field with a 3-part clover and 5-part fescue mix. She bought 45 pounds of fescue, how many pounds of clover are needed?
What will be an ideal response?
27 lb
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Answer the following statement(s) true (T) or false (F)
1. Plug-in relays are designed for multiple switching applications at or above 240 V. 2. The normal state of a switch shows the contact configuration when the device is being acted upon by an external force. 3. Standards have been developed that specify certain colors in push-button switch operators for particular functions. For example, in the machine tool industry, green means “Start Motors, Cycle Start, Initiate Motion.” 4. Multiple contacts may be connected to a single selector switch (SSW). 5. The 120 VAC circuit is normally protected by a single fuse or circuit breaker.
The strength of concrete used in precast concrete members is generally
A) 1 ksi to 2 ksi. B) 2 ksi to 3 ksi. C) 3 ksi to 4 ksi. D) 4 ksi to 5 ksi. E) 5 ksi to 6 ksi.
Why does a chilled water cooling coil have more rows of coils than a hot water heating coil?
A) Hot water heating coils can take advantage of radiant heat transfer and cooling coils cannot. B) More surface is necessary for dehumidification. C) Heat does not travel into cold water as readily as it does into hot water. D) Most buildings require more cooling than heating.
The subsequent problems deal with the figure below. Assume all outputs are low to begin with unless indicated otherwise.
If buttons B1 and B2 are both being held down, what does the following PicBasic code do?If (PORTB.1 == 1) ThenHigh PORTB.2ElseLow PORTB.2EndIf
A. turns off LED L1 (if it was on to begin with) B. turns on LED L1 (if it was off to begin with)