Which of the following is a metal?

Calcium (Ca)

Iron (Fe)

Sodium (Na)

all of these

X (t) = (20-4t^2) m, then what its average velocity in between t=0 and t=2sec?

A blank is the small number to the lower right of the chemical symbol. It tells how many atoms of the element are present in the blank

A Wave a of 350 Hz husa 39m. What is the velocity of the wave?

Doug wants to get better at volleyball. In order to do this, he has created a list of skills he will need to improve. Which skill should get the most of his attention in order for him to excel at volleyball

The magnitude of the electric force between two protons is 2.30 10-26 n. how far apart are they?

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

Rasheed runs a football 10 meters east, turns and runs the football 6 meters west. If his velocity during this run is found to be 3 meters/second, how long does this take Rasheed to complete this run?