Pls help pt.1 1. Click the following link to open the interactive simulation: phet. colorado. edu/sims/html/waves-intro/latest/wa ves-intro_en. html

2. Select “waves”

3.Over on the right there will be a box titled “Frequency”. Click on the little picture of a speaker at the bottom of the box.

4. Check the “Play tone” and “particles” then move the amplitude slider halfway. (It should look like the picture)

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.

What kind of simple machine is a catapult?

Both independent and dependent clauses