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WikiCards · Card list · Science cards · Energy–momentum relation
Uncommon card · Science
Energy–momentum relation, an Uncommon card
In physics, the energy–momentum relation, or relativistic dispersion relation, is the relativistic equation relating total energy to mass and momentum.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 67
- DEF
- 42
- Power
- 109
- Wikipedia reads a year
- 60,000
Power 109 (ATK + DEF): stronger than 50 % of WikiCards cards.
Energy–momentum relation quiz: 3 questions
Three questions on the Energy–momentum relation card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It assumes the special relativity case of flat spacetime and that the ______ are free.
Answer
particles. It assumes the special relativity case of flat spacetime and that the particles are free. From the Energy–momentum relation article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Yellapragada Subbarow. Yellapragada Subbarow 73 · Energy–momentum relation 67 · High-pass filter 64 · Commutative property 61 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- It is the extension of mass–energy equivalence for bodies or systems with non-zero momentum.
- It can be formulated as This equation holds for a body or system, such as one or more particles, with total energy E, mass m, and momentum of magnitude p, the constant c is the speed of light.
- It assumes the special relativity case of flat spacetime and that the particles are free.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Energy–momentum relation article was read about 60,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 67 and blocks with 42: each hit it takes is cut by 17 %.
How to get Energy–momentum relation
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
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Credits
Text : Wikipedia, Energy–momentum relation (revision), CC BY-SA 4.0. Photo : MikeRun, CC BY-SA 4.0, Wikimedia Commons.
