Conservation tillage systems can decrease soil erosion and runoff and increase water infiltration in soils of the tropics
Indicate whether the statement is true or false
TRUE
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A gas is confined in a 1.25(ft) diameter cylinder by a piston, on which rests a weight. The mass of the piston and weight together is 
The local acceleration of gravity is 
and atmospheric pressure is 30.12(in Hg).
(a) What is the force in (lbf) exerted on the gas by the atmosphere, the piston, and the weight, assuming no friction between the piston and cylinder?
(b) What is the pressure of the gas in (psia)?
(c) If the gas in the cylinder is heated, it expands, pushing the piston and weight upward. If the piston and weight are raised 1.7(ft), what is the work done by the gas in 
What is the change in potential energy of the piston and weight?
What is TRUE about technicians who recommend work?
A. Data about how much was recommended is found on the repair order tracking sheet B. Management should track and determine why technicians do not check for additional work C. Both A and B are correct D. Neither A nor B are correct
La protección auditiva más efectiva es provista por _____.
a. tapones para los oídos, desechables b. tapones para los oídos, reusables c. tapones de algodón d. protectores auditivos tipo auriculares
Technician A says that the purpose and function of the cooling system is to maintain proper engine operating temperature. Technician B says that the water pump controls engine coolant temperature by opening at its rated opening temperature to allow coolant to flow through the radiator. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician