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  2. Fifth force - Wikipedia

    en.wikipedia.org/wiki/Fifth_force

    The above experiments search for a fifth force that is, like gravity, independent of the composition of an object, so all objects experience the force in proportion to their masses. Forces that depend on the composition of an object can be very sensitively tested by torsion balance experiments of a type invented by Loránd Eötvös.

  3. Fundamental interaction - Wikipedia

    en.wikipedia.org/wiki/Fundamental_interaction

    The gravitational and electromagnetic interactions produce long-range forces whose effects can be seen directly in everyday life. The strong and weak interactions produce forces at subatomic scales and govern nuclear interactions inside atoms. Some scientists hypothesize that a fifth force might exist, but these hypotheses remain speculative.

  4. List of primary education systems by country - Wikipedia

    en.wikipedia.org/wiki/List_of_primary_education...

    Subjects usually taken up include Communication Arts in Mother Tongue (until Grade 3), English (some private schools break this down into Language and Reading) and Filipino, Mathematics, Science, Social Studies (taught in Mother Tongue from Grade 1-Grade 3, Filipino in Grades 4-6), Music, Art, Physical Education and Health (collectively known ...

  5. Life on the Genesee: Rochester students set sail, study science

    www.aol.com/life-genesee-rochester-students-set...

    Fifth-grader students from the Rochester City School District took a boat ride on the Genesee River to learn about life in and out of the water as part of their 5th-grade science curriculum.

  6. Flight - Wikipedia

    en.wikipedia.org/wiki/Flight

    Flight dynamics is the science of air and space vehicle orientation and control in three dimensions. The three critical flight dynamics parameters are the angles of rotation in three dimensions about the vehicle's center of mass , known as pitch , roll and yaw (See Tait-Bryan rotations for an explanation).

  7. George Cayley - Wikipedia

    en.wikipedia.org/wiki/George_Cayley

    [4] [5] He was a pioneer of aeronautical engineering and is sometimes referred to as "the father of aviation." [3] He identified the four forces which act on a heavier-than-air flying vehicle: weight, lift, drag and thrust. [6] Modern aeroplane design is based on those discoveries and on the importance of cambered wings, also proposed by Cayley ...

  8. Projectile motion - Wikipedia

    en.wikipedia.org/wiki/Projectile_motion

    Ballistics (from Ancient Greek βάλλειν bállein 'to throw') is the science of dynamics that deals with the flight, behavior and effects of projectiles, especially bullets, unguided bombs, rockets, or the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance.

  9. National Science Education Standards - Wikipedia

    en.wikipedia.org/wiki/National_Science_Education...

    The content of these standards is based heavily on a specific model of learning, constructivism (learning theory). [4] Like reform mathematics, [5] which is distinguished by an emphasis on building on what a child already knows and understands, the standards intend to update the methods of science education to achieve greater effectiveness with children.

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