The hottest stars appear bluish and are around what temperature?
A. 20,000 degrees Celsius
B. 15,000 degrees Celsius
C. 8,000 degrees Celsius
D. 3,000 degrees Celsius

In 1995 a research group led by eric cornell and carl wiemann at the university of colorado successfully cooled rubidium atoms to the 20-200 nk temperature range. assuming (incorrectly) that the rubidium atoms behave liké particles of a classical ideal gas, calculate the rms speed of a rubidium atom at a temperature of 112.0 nk. in the experiments one particular isotope of rubidium was used, rubidium-87. the molar mass of this isotope is 86.91 q/mol. tries 0/20 submit answer

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant

At what time will the interfering waves have an amplitudeof zero?