The greatest gravitational lensing is produced by the ________ that lie in the centers of massive galaxies
Fill in the blank(s) with correct word
black holes
Physics & Space Science
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What is the correct formula for calcium phosphate?
a. Ca3P2 b. Ca2(PO4)3 c. Ca3(PO4)2 d. Ca2P3
Physics & Space Science
In the context of measuring the properties of galaxies, a__________is an object of known brightness that astronomers use to find distance
A) black hole B) white dwarf C) standard candle D) red giant
Physics & Space Science
Object and image for a plane mirror occur
A) along the same plane. B) equal distances from the mirror. C) at right angles to each other. D) all of the above E) none of the above
Physics & Space Science
You measure a 20-V potential difference across a 7.0-? resistor. What is the current flowing through it?
a. 140 A b. 2.9 A c. 27 A d. 13 A e. 5.2 A
Physics & Space Science