A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
Energy can be converted into mass. Friction reduces the efficiency in a system. The amount of energy in a system remains constant. Potential energy can be converted into kinetic energy.
A B C D
Question: A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
A. Energy can be converted into mass.
B. Friction reduces the efficiency in a system.
C. The amount of energy in a system remains constant.
D. Potential energy can be converted into kinetic energy.
Answer:
A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
Potential energy can be converted into kinetic energy. The amount of energy in a system remains constant. Energy can be converted into mass. Friction reduces the efficiency in a system.
A B C D
Question: A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
A. Potential energy can be converted into kinetic energy.
B. The amount of energy in a system remains constant.
C. Energy can be converted into mass.
D. Friction reduces the efficiency in a system.
Answer:
D
A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
Energy can be converted into mass. Friction reduces the efficiency in a system. The amount of energy in a system remains constant. Potential energy can be converted into kinetic energy.
1 2 3 4
Question: A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
1. Energy can be converted into mass.
2. Friction reduces the efficiency in a system.
3. The amount of energy in a system remains constant.
4. Potential energy can be converted into kinetic energy.
Answer:
2
A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
Energy can be converted into mass. Friction reduces the efficiency in a system. The amount of energy in a system remains constant. Potential energy can be converted into kinetic energy.
D O C E
Question: A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
D. Energy can be converted into mass.
O. Friction reduces the efficiency in a system.
C. The amount of energy in a system remains constant.
E. Potential energy can be converted into kinetic energy.
Answer:
O
A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
Potential energy can be converted into kinetic energy. The amount of energy in a system remains constant. Energy can be converted into mass. Friction reduces the efficiency in a system.
D O C E
Question: A perpetual motion machine is a theoretical device which, once started, continues to operate without any additional input of energy. Which statement describes why a perpetual motion machine is impossible to design?
D. Potential energy can be converted into kinetic energy.
O. The amount of energy in a system remains constant.
C. Energy can be converted into mass.
E. Friction reduces the efficiency in a system.
Answer:
E