7. Allison is walking along the beach and sees a sand castle. She wants to place something on top of the sand castle, but she is worried about putting too much force on it. If she puts too much force on the sand castle, it will break. It takes 5000 N to smash the sand castle. The pressure of the items she places on the sand castle is 1200 Pa and the area of the sand castle is 2m x 3m. Does Allison break the sand castle? Explain why based on your calculations.

Why is alchemy not considered to be a science ?

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.