The example of kinetic energy transfer from the options provided is "Xavier pushing Brad down the snowy hill on a sled." This action involves the transfer of kinetic energy as Xavier exerts a force to move Brad and the sled down the hill.
Which of the following is an example of kinetic energy transfer?(1 point) Responses A large snowball sitting at the top of a hill A large snowball sitting at the top of a hill Xavier pushing Brad down the snowy hill on a sled Xavier pushing Brad down the snowy hill on a sled A car parked on a steep hill A car parked on a steep hill Jules sitting in a chair
11 answers
Question Which example demonstrates kinetic energy?(1 point) Responses A wave crashing on the shore A wave crashing on the shore A stretched-out rubber band A stretched-out rubber band A car parked in the parking lot A car parked in the parking lot A rock sitting at the top of a hill
The example that demonstrates kinetic energy is "A wave crashing on the shore." Kinetic energy is the energy of motion, and a crashing wave involves the movement of water, which is a clear example of kinetic energy in action.
When Kiara plays the piano, how does kinetic energy transfer from one object to the other?(1 point) Responses Energy transfers from Kiara’s fingers to the piano keys Energy transfers from Kiara’s fingers to the piano keys Energy transfers from the piano keys to Kiara’s fingers Energy transfers from the piano keys to Kiara’s fingers Energy transfers from the piano pedals to the piano keys Energy transfers from the piano pedals to the piano keys Energy transfers from the air to Kiara’s fingers
The correct response is "Energy transfers from Kiara’s fingers to the piano keys." When Kiara plays the piano, her fingers strike the keys, transferring kinetic energy from her fingers to the keys and causing them to produce sound.
Which statement correctly identifies the relative levels of kinetic and potential energy in a hydroelectric dam?(1 point) Responses Kinetic energy is highest at the top; potential energy is highest at the bottom. Kinetic energy is highest at the top; potential energy is highest at the bottom. Kinetic energy is highest at the bottom; potential energy is highest at the top. Kinetic energy is highest at the bottom; potential energy is highest at the top. Kinetic and potential energy are both highest at the top. Kinetic and potential energy are both highest at the top. Kinetic and potential energy are both highest at the bottom.
The correct statement is "Kinetic energy is highest at the bottom; potential energy is highest at the top." In a hydroelectric dam, water at the top has high potential energy due to its elevated position. As the water flows down, it converts that potential energy into kinetic energy, which is highest at the bottom where the water is moving rapidly.
Two different rivers have drops that are the same height. In river A, this drop of the river is a waterfall. In river B, this drop has the generator for a hydroelectric dam. In what way does the energy of the water differ between the drops in the two rivers?(1 point) Responses The kinetic energy of the water would be less at the bottom of the drop in the waterfall river A than at the hydroelectric dam river B. The kinetic energy of the water would be less at the bottom of the drop in the waterfall river A than at the hydroelectric dam river B. The kinetic energy of the water would be greater at the bottom of the drop in the waterfall river A than at the hydroelectric dam in river B. The kinetic energy of the water would be greater at the bottom of the drop in the waterfall river A than at the hydroelectric dam in river B. The potential energy of the water would be greater at the top of the drop in the waterfall river A than at the hydroelectric dam in river B. The potential energy of the water would be greater at the top of the drop in the waterfall river A than at the hydroelectric dam in river B. The potential energy of the water would be less at the top of the drop in the waterfall river A than at the hydroelectric dam in river B.
The correct response is "The kinetic energy of the water would be less at the bottom of the drop in the waterfall river A than at the hydroelectric dam river B."
In the case of the hydroelectric dam (river B), the water is directed through turbines, which captures more of the kinetic energy as it flows down, thus resulting in higher kinetic energy at the bottom. In contrast, at the waterfall (river A), while there is still kinetic energy as the water falls, it is less maximally harnessed for energy generation compared to the controlled flow in a hydroelectric dam.
Use the diagram to answer the question. The turbines can be seen inside this hydroelectric dam. Why are they located at that particular height? (1 point) Responses There is a large drop, so the water will have a lot of kinetic energy to transfer to the turbine. There is a large drop, so the water will have a lot of kinetic energy to transfer to the turbine. There is a large drop, so the water will have a lot of potential energy to transfer to the turbine. There is a large drop, so the water will have a lot of potential energy to transfer to the turbine. There is a small drop, so the water will still have a lot of kinetic energy to transfer to the turbine. There is a small drop, so the water will still have a lot of kinetic energy to transfer to the turbine. There is a small drop, so the water will still have a lot of potential energy to transfer to the turbine. There is a small drop, so the water will still have a lot of potential energy to transfer to the turbine. Skip to navigation
The correct response is "There is a large drop, so the water will have a lot of potential energy to transfer to the turbine."
Turbines in a hydroelectric dam are located at a height where there is a large drop, which allows the water to have significant potential energy. As the water falls, that potential energy is converted into kinetic energy, which then transfers to the turbines to generate electricity.