Name two examples of greenhouse gases

Sound travels at a speed of about 340m/s in the air. How long will it take an explosion to be heard from a distance of 20 miles away?

How do I balance a compound? Ex: Aluminum 3 + and Fluorine 1-

Which of the following statement (s) about energy and phase is/are correct? Select all that apply. Choose one or more: A. While only one phase is present, adding or removing energy changes PE but not KE. B.

If two objects are moved farther apart, the force of gravity between them will 1. decrease 2. increase 3. not change 4. cease to exist

Transverse and longitudinal waves both a. have compressions and rarefactions. b. transfer energy through a medium. c. move at right angles to the vibration of the medium. d. are capable of moving the medium a long distance.

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.