Using the example of an ambulance, explain the Doppler Effect. Infer why the doppler effect can or cannot occur in all waves
2 quarter at the bottom of a fountain,

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?

Explain the difference in reactivity of the elements based on their electron configurations.