Explain physically why the matter energy density and the radiation energy density evolve differently with time as the expansion of the universe ensues 4. what does the cosmic microwave background represent (i. e. where does this radiation originate)?

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear

Acar travels 40m in 8 seconds find the car speed

How does an observation about an object differ from an inference about that object