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1. In a hydroelectric power plant, moving water turns a turbine, which generates electricity. What energy conversion ta

1. In a hydroelectric power plant, moving water turns a turbine, which generates electricity. What energy conversion takes place in the turbine?. a. thermal to electrical b. Electrical to mechanical c. Thermal to mechanical d. Mechanical to electrical.

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1. In a hydroelectric power plant, moving water turns a turbine, which generates electricity. What energy conversion ta

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  1. 1. In a hydroelectric power plant, moving water turns a turbine, which generates electricity. What energy conversion takes place in the turbine? • a. thermal to electrical • b. Electrical to mechanical • c. Thermal to mechanical • d. Mechanical to electrical

  2. 2. Which activity describes work being done on an object? • Walking a dog on a leash. • Lifting a bag of groceries. • Holding up an umbrella • Pressing a stamp onto an envelope.

  3. 3. What simple machine is used in all of the following jobs: moving a flag to the top of a flagpole, lifting equipment with a construction crane, and using a block and tackle to move a crate? • Lever • Pulley • Wedge • Wheel and axle

  4. 4. What type of simple machine is the tip of a dart? • Lever • Wedge • Wheel and Axle • Screw

  5. 5. Identify the law that applies: a golf club is swung in a northerly direction, and that is the direction the ball travels. • Newton’s first law of motion. • Newton’s second law of motion. • Newton’s third law of motion. • Newton’s law of gravitational attraction

  6. 6. A student pushes on a lever with a force of 40 N. The 150-N load does not move. Which of the following statements is true? A. Input force is 40N and work done is 0 J. B. Input force is 40 N and work done is 600J. C. Output force is 40 N and work done is 150J. D. Output force is 150 N and work done is 40J.

  7. 7. You push a box a distance of 3.0 m exerting a force of 30 N. How much work did you do? • 10 J • 90 J • 0.10 J • 30 J

  8. 8. Which is the BEST definition of a machine? • A machine is a time-saving device that uses motors and gears. • A machine changes the input force. • A machine makes work easier by changing force, distance, or direction. • A machine can be either simple or compound.

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