Examlex
A solitary boy cannot balance on a seesaw with its fulcrum at its midpoint. If the fulcrum is moved to one-quarter the distance from the boy, balance is achieved when the weight of the boy is
Naked Seeds
Seeds not enclosed in an ovary or fruit, typical of gymnosperms like pine trees.
Conifers
A group of cone-bearing seed plants with vascular tissue, mostly evergreens, that includes pines, spruces, and firs.
Gymnosperms
A group of seed-producing plants that includes conifers, cycads, ginkgos, and gnetophytes, characterized by seeds that are not enclosed in an ovary.
Animal-pollinated
Refers to plants that rely on animals, such as bees, birds, and bats, to transfer pollen from one flower to another for fertilization.
Q3: A block of ice sliding down an
Q5: Earth is presently accelerating toward the Sun
Q11: A vertically-held sledge hammer is easier to
Q13: A circus diver drops from a high
Q18: If Alex wishes to rotate his skateboard,
Q18: A tow truck exerts a force of
Q28: If you toss a coin straight upward
Q52: What horizontally-applied force will accelerate a 400-kg
Q60: Eight little spheres of mercury coalesce to
Q77: According to Kepler, the line from the