What is the original source of energy for gasoline?
The process of generating electricity from dams and nuclear power plants is very different, but some of the energy transformations are the same. Which energy transformations occur in both dams and nuclear power plants? Check all that apply.kinetic energy to mechanical energynuclear energy to thermal energymechanical energy to electrical energythermal energy to electrical energy
Which statement is an example of the law of conservation of energy?
The pendulum has the most potential energy [___].
When you view the pendulum’s swing, it shows that at the very top of the swing KE = 0. What does that tell you about the pendulum’s motion at that point?
If the kinetic energy is zero, it means that the pendulum has no velocity and is not moving. At the very top of its swing, the pendulum stops for a brief moment before it begins to swing back down in the opposite direction.
The kinetic energy [___] as the roller coaster goes downhill.
Click the “step” button on the simulation to observe the energy at different points on the roller coaster ride. Use the information from the pie chart in the simulation to complete the sentences. Kinetic energy is greatest at . Potential energy is greatest at . Kinetic energy decreases while potential energy increases between steps .
Which chart comes closest to the relationship between kinetic energy and potential energy at point 6?
± [___] = x + 5
3
add 4 to 5 add 24 to 5 subtract 4 from 5 subtract 24 from 5
Subtract 25/2Add 25/2Subtract 25/4Add 25/4
–9 + [___] = 7(x2 – 8x + [___] )
112
Sample Response: Yes, the equation can be solved by factoring. Using the given equation, take the square root of both sides. Both 169 and 9 are perfect squares, so the left side becomes plus or minus 13/3, which is rational. Six plus 13/3 is a rational number, and 6 minus 13/3 is also a rational number. If the solutions of a quadratic equation are rational, then the equation is factorable. What did you include in your response? Check all that apply.Both169 and 9 are perfect squares.The square ro
The first few steps in solving the quadratic equation 9x2 + 49x = 22 − 5x by completing the square are shown.9x2 + 49x = 22 − 5x9x2 + 54x = 229(x2 + 6x) = 22
The pendulum has the least kinetic energy [___].
Sample Response: If KE = 0, the pendulum is not moving. At the top of the swing, the pendulum must stop for a brief moment. What did you include in your response? Check all that apply.Zero kinetic energy means the pendulum is not moving.The pendulum stops at the top of the swing.
✔ point 1point 2point 4point 6
x = –2 or x = [___]
-8
–2–1 12
subtract 25/2add 25/2subtract 25/4add 25/4
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