Answer:
About 5 % of the universe is visible.
Estimates are that 68 % of the universe consists of "dark energy" and 27% of the universe consists of "dark matter". Currently 95 % of the universe is not currently visible to the scientists involved (cannot be explained by means that we know).
Work = force x distance
200 Newtons x 20 meters
= 4,000 Joules
Solar cells are used to trap sunlight energy (light energy) and convert it to electric energy for domestic and other purposes.
What the question for this assessment
Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is in the form of visible light. Light is made of waves of different frequencies.
