What is the wavelength of an electromagnetic wave that has a frequency of 2.45 x 10° Hz in a vacuum? (The speed of light in a vacuum is 3.00 x 10^8 m/s.) A. 8.17 m
B. 4.08 x 10^-10 m
C. 7.35 x 10^17 m
D. 1.22 x 10^-7 m

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.