TOEFL 어휘

planet outside our solar system

외계 행성; 태양계 밖 행성

interaction that can change motion or shape

힘

part of structure transferring loads to ground

기초; 건축 기초

motion under gravity without other significant forces

자유 낙하 운동

number of repeated cycles per unit time

진동수; 주파수

contact force opposing relative sliding or its tendency

마찰력; 마찰

large gravitationally bound system of stars and other matter

은하

large planet composed mainly of hydrogen and helium

거대 가스 행성

machine converting mechanical energy to electrical energy

발전기

gravitational interaction between physical bodies

중력; 인력

operated by liquid pressure or flow

액압의; 수력의

resistance to change in velocity

관성

limit electric current between objects or regions

절연하다; 절연 처리하다

material strongly limiting electric charge movement

절연체; 절연 재료

energy associated with motion

운동 에너지

optical component redirecting light by refraction

렌즈

rigid member turning about a pivot

지레

visible electromagnetic radiation

빛; 가시광선

distance light travels in vacuum in one year

광년

carrying structural forces in a design

하중을 지탱하는; 내력의

energy emitted by a celestial object per unit time

광도; 천체의 복사 출력

field describing magnetic influence in space

자기장

quantity measuring inertia of an object

질량

relating to machines or physical forces and motion

기계의; 역학적인

ratio of output force to input force

기계적 이득; 힘의 이득

sum of kinetic and potential energy

역학적 에너지

energy transfer by force along displacement

역학적 일

mass times velocity in classical mechanics

운동량

change of position relative to a reference

운동