What's the definition of sound?

Which of these elements become cations with positive oxidation states? Magnesium oxygen fluorine calium

An astronaut takes a book onto the space shuttle. An identical book remains on earth. Which statements about the pull of earth's gravity on the books is true? A. The pull of earth's gravity is the same on both books because they are identical. B.

A. Your friend strikes a gong across the room from you. How does the gong make a sound? How does the energy of the sound reach you? Why don't you feel a push of air when you hear the sound? Write three or four sentences to state your answers. b.

carlis lives 100 m away from his friend home what is his average speed if he reaches his friends home in 50s

Jenny dissolves as much salt as she can in 100 mL of room-temperature water. She learned in class that less salt will dissolve in cold water than in hot water. Jenny adds some ice to the salt water and observes what happens.

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.