Sodium-24 has a half-life of 15 hours. After 45 hours, how much sodium-24 will remain of an original 50.0-g sample?

What is the speed or rate of a glacier erosion?

1 mi=5280 ft and 1 mi=3.281 ft how many meter are in a mile? A. 17,324 m B. 17,320m C. 1760m D. 1609m

A Each time he does one pushup, Jose, who has a mass of 89kg, raises his center of mass by 25 cm. He completes an impressive set of 150 pushups in 5 minutes, exercising at a steady rate If we assume that lowering his body has no energetic cost, what

A current carrying wire wrapped around an iron ore is called a

Why are fossil fuels important tools for intrepreting the past

What causes physical vibrations in transformers at twice the frequency of the AC power involved.

Projectile motion is a combination of which two types of motion? parabolic and curved straight and diagonal horizontal and vertical constant and linear

If a mass of a material is 100 grams and the volume of the material is 15 cm3, what would the density of the material be?

After three half-lives of an isotope, 1 billion (one-eighth) of the original isotope's atoms still remain in a certain amount of this element. How many atoms of the daughter product would you expect to be present?

A group of two or more stars is called a A. solar system B. neutron star C. protostar D. star system