This image of a roller coaster is designed to show important information about potential and kinetic energy. One of these labeled pieces of information is incorrect. Which information is wrong, and why?
(1 point)
Responses
The spot with the “maximum kinetic energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The spot with the “maximum kinetic energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The spot marked “maximum gravitational potential energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The spot marked “maximum gravitational potential energy” should be on the lowest point of the roller coaster, at the far left side on the bottom.
The roller coaster would only have potential energy at the point labeled “gravitational potential energy and kinetic energy.”
The roller coaster would only have potential energy at the point labeled “gravitational potential energy and kinetic energy.”
The roller coaster would only have kinetic energy at the point labeled “gravitational potential energy and kinetic energy.”
The incorrect information is the statement that the roller coaster would only have potential energy at the point labeled “gravitational potential energy and kinetic energy.” This is incorrect because at that point, the roller coaster would have both potential energy (at the top of the hill) and kinetic energy (as it is moving).
is it a b c or d
Sorry for the oversight. The incorrect information is option D: "The roller coaster would only have kinetic energy at the point labeled 'gravitational potential energy and kinetic energy.'" This statement is incorrect because, at that point, the roller coaster would have both gravitational potential energy (at the top of the hill) and kinetic energy (as it is moving).
Four rivers have the same volume of water flow over time but fall from different heights to power hydroelectric dams. Which dam would provide the most hydroelectric power?(1 point)
Responses
dam A: fall height of 175 feet
dam A: fall height of 175 feet
dam C: fall height of 135 feet
dam C: fall height of 135 feet
dam B: fall height of 75 feet
dam B: fall height of 75 feet
dam D: fall height of 100 feet
The dam that would provide the most hydroelectric power is dam A with a fall height of 175 feet. In hydroelectric power generation, the amount of potential energy available for conversion into electrical energy is determined by the height (or "head") of the water falling onto the turbine. The higher the fall height, the more potential energy is available to generate electricity. Therefore, the higher the dam, the more hydroelectric power it can potentially produce.
Why are the turbines for hydroelectric dams located far below the top of the dam?(1 point)
Responses
to allow the potential energy of the water to increase greatly before reaching the turbines
to allow the potential energy of the water to increase greatly before reaching the turbines
to ensure that the water does not lose too much potential energy before reaching the turbines
to ensure that the water does not lose too much potential energy before reaching the turbines
to allow the kinetic energy of the water to increase greatly before reaching the turbines
to allow the kinetic energy of the water to increase greatly before reaching the turbines
to ensure that the water does not lose too much kinetic energy before reaching the turbines
The turbines for hydroelectric dams are located far below the top of the dam to ensure that the water does not lose too much potential energy before reaching the turbines. By allowing the water to fall through a significant height before reaching the turbines, the potential energy is converted into kinetic energy, which drives the turbines to generate electricity. Placing the turbines further down the dam ensures that the water has sufficient energy to effectively generate power.
a b c or d
The correct response is:
b) to ensure that the water does not lose too much potential energy before reaching the turbines
This option accurately explains the reason why turbines for hydroelectric dams are located far below the top of the dam.