A horseshoe magnet is moved toward a pile of iron shavings. The iron shavings divide and attach to both ends of the magnet. How does the kinetic energy of the system change? (1 point) Responses Kinetic energy increases because iron shavings move in the direction of magnetic force. Kinetic energy increases because iron shavings move in the direction of magnetic force. Kinetic energy increases because iron shavings move in the opposite direction of magnetic force. Kinetic energy increases because iron shavings move in the opposite direction of magnetic force. Kinetic energy decreases because iron shavings move in the direction of magnetic force. Kinetic energy decreases because iron shavings move in the direction of magnetic force. Kinetic energy decreases because iron shavings move in the opposite direction of magnetic force.
7 answers
Kinetic energy increases because iron shavings move in the direction of magnetic force.
Two bar magnets are held in place with their north poles facing each other. Both magnets are released at the same time. Which statement describing changes to the energy of the system is correct?(1 point) Responses Potential energy decreases, kinetic energy increases, and thermal energy decreases. Potential energy decreases, kinetic energy increases, and thermal energy decreases. Potential energy decreases, and kinetic and thermal energy increase. Potential energy decreases, and kinetic and thermal energy increase. Potential energy increases, and kinetic and thermal energy decrease. Potential energy increases, and kinetic and thermal energy decrease. Potential energy increases, kinetic energy decreases, and thermal energy increases.
Potential energy decreases, kinetic energy increases, and thermal energy increases.
Use the pictured setup to answer the question. Two bar magnets are held in place in the configuration shown. If the magnets are pulled apart, which statement correctly describes the changes that will take place in the energy of the system? (1 point) Responses Potential energy increases because movement is in the direction of the magnetic field. Potential energy increases because movement is in the direction of the magnetic field. Potential energy decreases because movement is in the direction of the magnetic field. Potential energy decreases because movement is in the direction of the magnetic field. Potential energy decreases because movement is in the opposite direction of the magnetic field. Potential energy decreases because movement is in the opposite direction of the magnetic field. Potential energy increases because movement is in the opposite direction of the magnetic field.
Potential energy increases because movement is in the opposite direction of the magnetic field.
The south poles of two bar magnets are 10 cm from each other. The poles are brought to 5 cm apart and then moved back to their original positions. How does the energy of the system change? (1 point) Responses The kinetic energy of the system decreases because some of it is transferred to thermal energy. The kinetic energy of the system decreases because some of it is transferred to thermal energy. The total change in the energy of the system is zero. The total change in the energy of the system is zero. The potential energy of the system first decreases and then increases. The potential energy of the system first decreases and then increases. Both the potential and kinetic energy of the system decrease.
The potential energy of the system first decreases and then increases.
1 answer