Force decreases as distance increases
There are two<span> main types of </span>wave<span> interference: constructive interference and destructive interference. Constructive interference </span>happens<span> when the amplitude of the combined </span>waves<span> is larger than the amplitudes of the single </span>waves<span>. This can occur when the </span>crests of two<span> transverse </span><span>waves overlap.
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During a total lunar eclipse, Earth completely blocks direct sunlight from reaching the Moon. The only light reflected from the lunar surface has been refracted by Earth's atmosphere. ... Due to this reddish color, a totally eclipsed Moon is sometimes called a blood moon.
Potential energy relative to the floor =
(mass) x (gravity) x (height off the floor) =
(2kg) x (9.8 m/s²) x (2m) =
39.2 kg-m²/sec² = <em>39.2 joules </em>