What is the speed of a rocket in m/s that travels 900 meters in 12.12 seconds

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory

The largest observatory complex in the world is on mauna kea, the tallest mountain on earth. what are some factors astronomers consider when selecting an observatory site? don’t forget practical ones. should astronomers, for example, consider building an observatory on denali (mount mckinley) or mount everest?