How many isotopes does argon have? explain how you determined this

Approximately how long does it take a star the size of the sun to become a red giant? a) 2 million years b) 10 million years c) 45 billion years d) 25 million years

E. A pyramid has a square base. Its volume is 48 cubic centimeters and its height is 4 centimeters. What is the length of one side of the base? A. 2 cm B. 6 cm C. 12 cm D. 144 cm

The temperature of the a body increase as the velocity of the body's molecules?

What is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is free fluoride

What are the characteristics of pure substances

An object, moving with constant acceleration and zero initial velocity of 129 m/s how high will it be after 4.0 s

An 85kg man is jogging with a velocity of 2.6m/s to the north. nearby a 65kg person is skateboarding and traveling with a velocity of 3m/s north. which person has greater momentum show your calculations

Which celestial body is the smallest: solar system, jupiter, galaxy, sun?

What level of nitrates is considered clean water?

What is one harmful way friction affects a car