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.”
25 answers
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
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
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.
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.
A child is swinging back and forth on a swing. Changes in her kinetic and potential energy are happening each moment. At which point, or multiple points, in her swinging would each of these two types of energy be at a maximum? In one to two sentences, describe these points and which type of energy is at a maximum at each point.(2 points)
At the highest point of her swing, the child's potential energy is at a maximum because she is the highest off the ground, which translates to maximum potential energy. At the lowest point of her swing, her kinetic energy is at a maximum because she is moving the fastest, indicating maximum kinetic energy.
in different words plz
At the highest point of her swing, when she is at the peak of her motion, the child's potential energy is at its highest because she has the greatest distance from the ground. At the lowest point of her swing, when she is moving the fastest, her kinetic energy is at its maximum as the energy of her motion is at its peak.
in words that sound like a human
At the highest point of her swing, when she's lifted up high, the child has the most potential energy stored. At the lowest point of her swing, when she's swinging fastest, she has the most kinetic energy from her movement.
in words that sound like an 8th grader
At the top of the swing, the child has the most energy ready to go because she's way up high. At the bottom of the swing, she's moving the fastest and has the most energy from swinging back and forth.
An athlete is practicing shotput using a 16-pound shot, and he throws it 40 feet. He then uses a 12-pound shot and throws it 50 feet. In three to four sentences, explain why there is a difference in these throws using the ideas of mass and speed and how each relates to kinetic energy.(4 points)
The difference in the throws of the shotput can be explained by the concepts of mass and speed and how they relate to kinetic energy. The 16-pound shot has a greater mass compared to the 12-pound shot, meaning it requires more force to move and accelerate. This results in the athlete throwing the heavier shot a shorter distance. However, the 12-pound shot, being lighter, can be accelerated to a higher speed by the athlete, allowing it to cover a greater distance. In this scenario, the kinetic energy of each shot is determined by both its mass and the speed at which it is thrown. The kinetic energy of an object is calculated as 1/2 * mass * speed^2, so even though the heavier shot has more mass, the speed at which the lighter shot can be thrown allows it to have more kinetic energy and cover a greater distance than the heavier shot despite having less mass.
in different words
The difference in the shotput throws can be explained by how mass and speed affect kinetic energy. The 16-pound shot is heavier, so it needs more force to be thrown the same speed as the 12-pound shot. This means the athlete can't throw it as far. The lighter 12-pound shot can be thrown faster by the athlete because it's lighter, allowing it to cover a greater distance even though it has less mass..setGeometry
in words that sound like a human
The reason the athlete threw the 16-pound shot shorter than the 12-pound shot is because the heavier shot required more effort to throw at the same speed. The lighter shot could be thrown faster because it was easier to move, covering a greater distance. This difference in how heavy and how fast the shots were thrown affected how far each one went.
in words that sound like an 8th grader
The 16-pound shot didn't go as far because it was heavier and harder to throw at the same speed as the 12-pound shot. The lighter 12-pound shot could be thrown faster and farther because it was easier to move. So, the difference in weight and how fast they were thrown made one shot go a longer distance than the other.
1 answer