What triggers the development of a tornado?

Should disel and gasoline engines complaint with CO2 emissions standards be banned? Can this statement be answered by science?

What are The usages of transducer in ultrasonic?

Examine the chemical equation: C17H170N3 (s) + 2C4H603 (1) - -> C2182105N (s) + 2C2H4O2 (1) Does the equation describe a chemical change or a physical change? Explain.

How do i convert 1000mg into grams using the ladder method?

How can we tell the difference between gases like hydrogen, oxygen, and carbon dioxide cause they all look to same?

Which best explains why astronauts appear weightless when they are in a space shuttle orbiting Earth? • They are falling toward Earth at the same rate as the space shuttle.

If increase the amplitude how does the velocity change? (No google)

What is the result of multiplying (2.5 * 1010) * (3.5 * 10-7) ? Use the correct number of significant digits.

What is 0.002353 to two significant figures

10. Is the identity of an element determined by its mass number or atomic number? By omak