Engineering, 16.10.2020 14:01 abbymoses3

Between 1930 and 2012, what was the increase of the American farmer's ability to feed people without changing the amount of land used?

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, makaylashrout77

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Answers: 2

continue

Engineering, 05.07.2019 23:20, neisha2507

Which one of the following faults cause the coffee in a brewer to keep boiling after the brewing cycle is finished? a. an open circuit in the heating element b. a short circuit at the terminals c. welded contacts on the thermostat d. a leak around the gasket

Answers: 3

continue

Engineering, 06.07.2019 02:30, heavenwagner

A12 mm diameter shaft runs in a plain cylindrical bush 30 mm long that is located in an 18 mm diameter hole in a housing. the shaft-inner bush fit is h8 f and the outer bush-housing fit is h7-p6. make a fully cimensioned sketch of the bush with tolerances. find the maximum and minimum clearance or interference for both fits on the inner and outer diameters of the bush

Answers: 3

continue

Engineering, 06.07.2019 03:10, iiisavageoreo

Two slings are used to lift a girder of length l and uniform weight per unit length. what is the best position for the slings if the bending moment due to the weight of the girder is to be kept to a minimum?

Answers: 2

continue

You know the right answer?

Between 1930 and 2012, what was the increase of the American farmer's ability to feed people without...