A sound wave travels across a 2,100-meter wide valley in 7.0 seconds.

How does the value of the electrostatic force vary with the value (how many) of the charges?

99 percent of the earth's atmosphere by mass is made up of only elements. These elements are A) Carbon and oxygen B) Nitrogen and oxygen C) Hydrogen and oxygen D) Helium and hydrogen

Does toothpaste have matter

Thermal pollution: can reduce the oxygen supply in an aquatic ecosystem is the release of warm water into streams, rivers, and lakes is a negative effect of nuclear power all of the above

Where are most experiments done?

Define valence electrons and identify the number of valence electrons in an element using periodic table.

What is the phenomenon thats occours when two waves (blank) while traveling along the same medium

The acceleration of an object increases by the force applied to it and decreases based on it's mass.

Expresa en terminos de la unidad fundamental

What color does Indigo turn things?