1. You have a 1st class lever with a resistance force of 185 lbs. You can only apply 80 lbs of effort force and your fulcrum is 2 feet from the 185 lbs
force. How far away would you need to be, at least, to lift the 185 lbs?

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.