The table below describes some processes in which food is changed as it travels through the digestive system. Which of the processes describe only physical changes in the food particles?

Processes 1, 2, 3, and 4

Processes 1, 3, and 6

Processes 2, 5, and 6

Processes 1, 3, and 4

How is zig zagging a form of acceleration?

Explain what happens at the saturation point when adding salt to water at room temperature.

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)