Can someone help me please? :/ Regular eclipses of the Sun and the Moon are best explained by which of the following?

1: The movement of Earth and the Moon around the Sun

2: The relative masses of the Sun, Earth, and the Moon

3: The different compositions of the Sun and the Moon

4: The rotation of Earth and the Moon on their axes

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603