Engineering

  • Alternating current, 521

  • Angular speed of a gear wheel, 443, 447

  • Angular speed of a pulley, 447

  • Beam weight, 153

  • Bridge arch, 737

  • Bridge supports, 736

  • Canyon depth, 577

  • Depth of a well, 201

  • Distance across a lake, 633

  • Electrical theory, 521

  • Electricity, 380

  • Fire tower, 566

  • Flashlight mirror, 727

  • Gears, 567

  • Golden Gate Bridge, 415

  • Height of a building, 415

  • Height of a cliff, 201

  • Height of an elevator shaft, 196-197

  • Length of a pole, 566

  • Mechanics, 521

  • Power of electric current, 164

  • Pumping rate, 153

  • Pumping time, 164

  • Satellite dish, 726-727, 790

  • Solar panels, 70-71

  • Spotlight, 727, 787

  • Suspended block, 615, 618, 630

  • Suspension bridge, 727

  • Ultrasound receiver, 727

  • Wind power capacity, 389

  • Windmill power, 31

  • Window design, 126

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