Now that you have learned about sound waves and the media through which they travel, can you answer the age-old question: “If a tree falls in the forest and no one is around to hear it, does it make a sound?

Shelly experiences a backward jolt when the driver starts the school bus. which of the following explains this phenomenon? a. the inertia of shelly b. the inertia of the bus c. the normal force of the seats on shelly d. the net force acting on shelly in a backward direction e. a zero net force acting on shelly

Anybody wanna ? (picture included? )

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?