How much mechanical work is required to lift a 300-lb compressor ...

[acc299]

How much mechanical work is required to lift a 300-lb compressor 3 ft?
 
  A) 300 lb  3 ft = 900 ft-lb of force
  B) Mechanical force alone will not lift the compressor.
  C) 300 lb of force
  D) 300 lb/3 ft = 100 ft-lb of force

Question 2

How many BTUs will a 10-kW heater produce if operated for an hour?
 
  A) (10 kW/3,410 )  60 = 176 BTU B) 10 kW/3,410 BTU = 2.93 BTU
  C) 10 kW  1 hour  3,410 BTU = 34,100 BTU D) 10 kW 1 hour = 10,000 BTU

[tuate]

Answer to Question 1

A

Answer to Question 2

C

[acc299]

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