Because the more advances made in the world means the more we can learn on how things work and how we can better the lives of humans and other species. If we didn't have scientific advancements we wouldn't have cell phones, electric, tv, car, computers, ect. We would still be living in Cave man era with clubs and horrible language skills.
What object do you need to match
Radio waves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays are all types of electromagnetic radiation. Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
It is trajectory acceleration. A friction track is a device to study motion in low friction environments, I believe. Does this help?
C stands for carbon. The O stands for oxygen. CO2 is one carbon atom and two oxygen atoms
