Physical Science B Semester Exam
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Question
A bar magnet is held in place while another bar magnet is placed near it. The second bar magnet spins around and attaches to the first magnet on one end. Which statement is correct about the energy stored in the magnetic field? (1 point)
Responses
The decrease in the energy stored in the system is proportional to the decrease in kinetic energy.
The decrease in the energy stored in the system is proportional to the decrease in kinetic energy.
The increase in the energy stored in the system is proportional to the decrease in kinetic energy.
The increase in the energy stored in the system is proportional to the decrease in kinetic energy.
The decrease in the energy stored in the system is proportional to the increase in kinetic energy.
The decrease in the energy stored in the system is proportional to the increase in kinetic energy.
The increase in the energy stored in the system is proportional to the increase in kinetic energy.
Plzzzz hurrrry and answer quicklyyyyy and correctlllyyyy
The increase in the energy stored in the system is proportional to the increase in kinetic energy.
To determine the correct statement about the energy stored in the magnetic field when one bar magnet spins around and attaches to another magnet, we need to understand the relationship between energy and kinetic energy in this scenario.
The energy stored in a magnetic field is typically referred to as magnetic potential energy. When two magnets interact, the energy stored in the system can change. In this case, the second bar magnet spinning around and attaching to the first magnet will cause the magnetic potential energy to either increase or decrease.
To figure out the relationship between the energy stored in the system and kinetic energy, we need to consider the conservation of energy. According to the law of conservation of energy, energy cannot be created or destroyed; it can only be transferred or transformed from one form to another.
In this situation, as the second bar magnet spins around and attaches to the first magnet, its kinetic energy decreases. This is because the magnet's movement slows down, eventually coming to a stop as it attaches to the first magnet.
So, the correct statement about the energy stored in the magnetic field is: "The decrease in the energy stored in the system is proportional to the decrease in kinetic energy." This statement reflects the fact that as the kinetic energy of the spinning magnet decreases, the energy stored in the magnetic field also decreases.