Answer: A. Work is done on the system and heat is transferred from the system for a net decrease in internal energy.
Explanation:
A refrigerator is a device which dispenses heat from the close system to a warmer area or in the surrounding. By dispensing the heat the internal temperature of the refrigerator drops. The system of refrigerator violates the second law of thermodynamics. As it performs the work to cool the region instead of heating the region. The work is done on the system and the internal energy decreases and the heat energy is liberated to the surrounding area. A refrigerator is an open system.
Answer:
If this explosion is occurring in a closed environment this 'rule' would be:
The conservation of momentum.
Explanation:
In a close system which means the experiment is isolated from the surrounding environment and therefore not allowed to interact with its external space will have the same amount of momentum at the end of the experiment as the beginning by the equation of p=mv, p is momentum, m is mass and v is velocity.
The centripetal force needed to keep earth in orbit is gravity.
Velocity of the sled is 3.2 m/s
In other words, it means give an example of something in your life that you rely on to keep you safe.
Example: "I rely on my car's testing and evaluation of it's product design to keep me safe from getting into an accident or it breaking down."
