Question

1. - peints My Notes Ask Your The figure below is from the Energy Forms PhET that we used in class. A. If the system is the biker, bike, wheel, electrical wire, and the water, select all statements that are true: (Select all that apply.) O Thermal energy is transferred out of the system. OMechanical energy is transformed to chemical energy within the system. Electrical energy is transferred out of the system. Electrical energy is transformed to thermal energy within the system. O Chemical energy is transformed to mechanical energy within the system. B. If the system is the biker, bike, and wheel, select all statements that are true: Select all that apply.) Thermal energy is transferred out of the system. O Mechanical energy is transformed to chemical energy within the system. Electrical energy is transformed to thermal energy within the system. O Chemical energy is transformed to mechanical energy within the system Electrical energy is transferred out of the system. C. According to the snapshot of the simulation, the process that begins with the biker gaining chemical energy from her snack, and ends with boiling water is not 100% efficient. Which of the following observations supports this statement? The biker needs more food. O There are multiple energy transformations. O The snapshot shows thermal energy blocks that are transferred out of the system.

Answer 1

Answers :

Part (A) Answers : the following statements are true :

• Thermal energy is transferred out of the system.
• Electric energy is transformed to thermal energy within the system.
• Chemical energy is transformed to mechanical energy within the system.

Part (B) Answers : the following statements are true :

• Thermal energy is transferred out of the system.
• Chemical energy is transformed to mechanical energy within the system.

Part (C) Answers :  the following statements are true :

• The snapshot shows thermal energy blocks that are transferred out of the system. (From Bicycle)