science

Why is it impossible to build a machine that produces more energy than it uses?

  1. 👍 0
  2. 👎 0
  3. 👁 241
  1. Because there is no such thing as perpetual motion. Another way to say it is that the effeciency would need to be greater than 100% and that can't be.

    1. 👍 1
    2. 👎 0
  2. Efficiency can never reach 100% because there's always loss of energy during the process of carrying out work. One example is energy loss because they're converted into heat while operating.

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    We know that the law of conservation of energy states that energy can not be created or destroyed. It only changes form. Consider this energy transformation diagram. Assume that the energy input in this case is chemical potential

  2. Physics

    Suppose you were to drop a 9 lb bowling ball from the top of the Empire State Building, which is about 440 m tall, onto a machine that would catch it and then convert its kinetic energy into electrical energy. For how long could

  3. MATH

    1. A factory manufactures two products, each requiring the use of three machines. The first machine can be used at most 60 hours; the second machine at most 30 hours; and the third machine at most 80 hours. The first product

  4. Math

    3.22 Defective rate. A machine that produces a special type of transistor (a component of computers) has a 2% defective rate. The production is considered a random process where each transistor is independent of the others. (a)

  1. Science

    Classify each of the following as examples of kinetic or potential energy. a) a car driving along a level road. b) an elastic band is stretched to twice its normal length c) a book is at rest on the top shelf of a bookcase d) a

  2. college finite math

    A product may be made using Machine I or Machine II. The manufacturer estimates that the monthly fixed costs of using Machine I are $17,000, whereas the monthly fixed costs of using Machine II are $14,000. The variable costs of

  3. math

    Jason is considering purchasing a new machine to make plastic silverware. The machine produces 1,000 pieces of silverware in two hours. One box contains 50 pieces of silverware and sells for $3.00. If the machine costs $9,000, and

  4. Physics

    A baseball player uses a pitching machine to help him improve his batting average. He places the 43.4 kg machine on a frozen pond. The machine fires a 0.0546 kg baseball horizontally at a speed of 44.8 m/s. What is the magnitude

  1. Math Question

    A product may be made using machine I or machine II. The manufacturer estimates that the monthly fixed costs of using machine I are $18,000, whereas the monthly fixed costs of using machine II are $15,000. The variable costs of

  2. science

    how should each form of energy be identified? A) energy A:gravitational energy /energy B:chemical energy B) energy A: nuclear energy/ energy B: electrical energy C) energy A: electromagnetic energy energy B:sound energy D) energy

  3. Math

    A factory has 3 machines that produce the same item. Machines 1 and 2 each produce 30% of the total output, while machines 3 produce 40%. It is known that 6% of Machine 1's output is defective, while machine 2 produces 5%

  4. phys

    To totally convert a given amount of mechanical energy into heat is Choose one answer. a. impossible. b. possible. c. impossible to answer without additional information.

You can view more similar questions or ask a new question.