Posted on April 22, 2022 (Updated on July 9, 2025)
What contributions did Brahe and Kepler make to astronomy?
Space & NavigationThese two colorful characters made crucial contributions to our understanding of the universe: Tycho’s observations were accurate enough for Kepler to discover that the planets moved in elliptic orbits, and his other laws, which gave Newton the clues he needed to establish universal inverse-square gravitation. What did Brahe contribute to astronomy? Brahe created detailed mathematical
Posted on April 22, 2022 (Updated on July 9, 2025)
How do you rotate a vector 90 degrees?
Space & NavigationNormally rotating vectors involves matrix math, but there’s a really simple trick for rotating a 2D vector by 90° clockwise: just multiply the X part of the vector by -1, and then swap X and Y values. How do you rotate a 90 degree rule? The rule for a rotation by 90° about the origin
Posted on April 22, 2022 (Updated on July 9, 2025)
What is the difference between a trapezoid and a rhombus?
Space & NavigationA trapezoid is a quadrilateral with at least one pair of parallel sides (called bases), while a rhombus must have two pairs of parallel sides (it is a special case of a parallelogram). The second difference is that the sides of a rhombus are all equal, while a trapezoid may have all 4 sides of
Posted on April 22, 2022 (Updated on July 9, 2025)
How are proper and regular subsets characterized?
Space & NavigationAnswer: A subset of a set A can be equal to set A but a proper subset of a set A can never be equal to set A. A proper subset of a set A is a subset of A that cannot be equal to A. In other words, if B is a proper subset
Posted on April 22, 2022 (Updated on July 9, 2025)
What is the root word of Connect?
Space & Navigationmid-15c., “to join, bind, or fasten together,” from Latin conectere “join together,” from assimilated form of com “together” (see con-) + nectere “to bind, tie” (from PIE root *ned- “to bind, tie”). What is connect word? 1 : to join or fasten together usually by something intervening A highway connects the two towns. 2 :
Posted on April 22, 2022 (Updated on July 9, 2025)
What stages will the sun go through?
Space & NavigationThe Sun is currently a main sequence star and will remain so for another 4-5 billion years. It will then expand and cool to become a red giant, after which it will shrink and heat up again to become a white dwarf. The white dwarf star will run out of nuclear fuel and slowly cool