A student drops a feather and a bowling ball from equal heights in a vacuum. The objects land at the same time. Which graph correctly shows the bowling ball’s total mechanical energy as it falls?
The correct graph would show a constant total mechanical energy for the bowling ball as it falls, since there is no air resistance or external forces acting on it. This means that the potential energy decreases as the ball gets closer to the ground, while the kinetic energy increases to maintain a constant total mechanical energy. Therefore, the graph should show a linear decrease in potential energy and a linear increase in kinetic energy.
does a 700 gram car have more potential energy than a 500 gram car at the peak of a ramp?
Yes, a 700 gram car would have more potential energy than a 500 gram car at the peak of a ramp, assuming both cars are at the same height above the ground. The potential energy of an object is directly proportional to its mass and its height above the reference point (usually the ground). Therefore, a heavier object will have more potential energy than a lighter object at the same height.
A baseball is thrown into the air as shown below. Which is true about the total energy at point S? (1 point) Responses At point S, the total energy is three times the total energy of the system, as kinetic energy was increased. At point S, the total energy is three times the total energy of the system, as kinetic energy was increased. At point S, the total energy is half of the system’s total energy, as kinetic energy was destroyed. At point S, the total energy is half of the system’s total energy, as kinetic energy was destroyed. At point S, the total energy is equal to the total energy of the system because energy kinetic energy has been transformed to potential energy. At point S, the total energy is equal to the total energy of the system because energy kinetic energy has been transformed to potential energy. At point S, the total energy is double the total energy of the system, as new energy is created as the potential energy increases. (point S is the highest peak of the ball)
At point S, the total energy is equal to the total energy of the system because kinetic energy has been transformed to potential energy.
The universe’s total amount of energy does not ever change, but the amount of this energy that is available to do work varies tremendously. What statement best explains the changes in available energy?(1 point) Responses Energy transfer always occurs through heat. Energy transfer always occurs through heat. The only way to create energy is through nuclear reactions. The only way to create energy is through nuclear reactions. 100% of energy is always converted with perfect efficiency. 100% of energy is always converted with perfect efficiency. Energy constantly changes from one form to another.
Energy constantly changes from one form to another.
when a light is struck, what forms of energy does the burning match give off?
When a match is struck and burns, it gives off several forms of energy. These include:
1. Heat energy: The burning match produces heat energy as a result of the exothermic chemical reaction between the matchstick and the oxygen in the air.
2. Light energy: The burning match also produces light energy in the form of a flame, which is a visible manifestation of the energy being released.
3. Sound energy: The burning match may produce a cracking or popping sound, which is a result of the rapid expansion and release of gases during the combustion process.
4. Chemical potential energy: The matchstick itself contains stored chemical potential energy in the form of the combustible substances, such as phosphorus or sulfur, that are ignited during the burning process.
Overall, the burning match releases heat, light, sound, and converts stored chemical energy into other forms of energy.
when a light is struck, what forms of energy does the burning match give off?
thermal energy and solar energy
nuclear energy and light energy
light energy and thermal energy
solar energy and nuclear energy