Which evidence best supports scientists' inferences about the origin and age of the universe?

The answer is cosmic background radiation.

Explanation:

Background cosmic radiation is defined as the energy left over from the Big Bang, which produced the origin of the universe. This prediction was made by physicist George Gamow, Robert C. Herman, and Ralph A. Alpher.

Background cosmic radiation was first detected by radio astronomers Arno Penzias and Robert Wilson. The Big Bang theory predicted a specific characteristic of cosmic background radiation, which must be the spectrum of a body being in thermodynamic equilibrium. Through the COBE satellite it was possible to measure the spectrum of the cosmic background radiation and it was determined that this radiation is the same as the theory predicts.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

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(jacemorris04)