Which model of the fate of the universe, if correct, would predict a slow descent into dark matter and energy through radioactive decay?
A. atomic theory model
B. open universe model
C. closed universe model
D. cosmological model

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.

Convection occurs when thermal energy is transferred by the movement of

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature