Why does the number of elements vary from period to period

Summarize: in general, how can you determine the mass number of the daughter product after alpha decay has taken place? How can you determine the atomic number?

What is the capital of Guinea

Describe the history of magnetism

A spring is compressed 1.5 meters and has a spring constant of 65 N/m. a) How much force is involved in compressing the spring? b) How much energy does the spring store? c) How high could it potentially launch a 0.10 kg projectile?

A car designer is designing a new model of a popular car. He wants to use the same engine as in the old model, but improve the new cars acceleration.

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

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)