4. Summarize: The principle of conservation of energy states that in a closed system the total energy remains constant. How do your experiments demonstrate this principle?

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

In which of these cases are the two wave points considered to be in phase with each other?

Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?