3. How many valence electrons are in the outermost energy level of each of the following elements?

a. Helium

b. Lithium

c. Nitrogen

d. Magnesium

What two measurements of a wave do you need to calculate its speed?

What is the function of a power source in a circuit

5.00 kg of liquid water is heated to 100.0 °C in a closed system. At this temperature, the density of liquid water is 958 kg/m3. The pressure is maintained at atmospheric pressure of 1.01 x 105 Pa.

Imagine you cut something in half. Then, you cut each half in half and continue doing so. Could you keep cutting the pieces in half forever?

Many fungi are decomposers. true or false?

If you had a positive 8 score on the sit-an-reach test you

65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids.

Near which location in New York State would a geologist have the greatest chance of finding dinosaur footprints in the surface bedrock?

E=mc^2 solve for c E/m m/E sqrt (E/m) sqrt (m/E) E - m sqrt (E-m)

For resonance to occur, the object must experience a frequency equal to its what? amplitude period wavelength natural frequency