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Here you'll review some of the basics of physics and chemistry, including mechanics, optics, electricity and magnetism, periodicity, and chemical equations, as you prepare to show your physical science prowess on the MCAT.
Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more. It’s all free for learners and teachers.
We are thrilled to announce content improvements we have made to the Khan Academy MCAT course! These improvements include passage, question, and explanation updates to over 80 Biological and Biochemical Foundations of Living Systems (BBLS) passages included in the course.
Since 2018, Khan Academy and LSAC have partnered to provide free LSAT prep through Khan Academy’s Official LSAT Prep to hundreds of thousands of test takers from all backgrounds. In February 2020, LSAC began providing free and low-cost test preparation resources through LawHub.
We're thrilled to announce that Khan Academy will be retaining our FREE MCAT course until 2026 with the support of the Association of American Medical Colleges (AAMC). The feedback we heard from so many of you helped make this happen.
Math: Get ready courses; Get ready for 3rd grade; Get ready for 4th grade; Get ready for 5th grade; Get ready for 6th grade; Get ready for 7th grade; Get ready for 8th grade
Concave lenses, with their inward curve, create divergent light rays. When a ray parallel to the principal axis hits the lens, it refracts outward as if coming from the focal point. Another ray, passing through the lens center, doesn't refract. These rays form a virtual, upright, and smaller image, appearing closer to the lens than the actual object.
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The vestibular system, crucial for balance and spatial orientation, relies on the inner ear's semi-circular canals and otolithic organs. The canals detect head rotation, while otolithic organs sense linear acceleration and head positioning. When these systems malfunction, it can lead to dizziness and vertigo.