下面为大家整理的是关于SAT2物理词汇方面的信息，是以字母E开头的。SAT2物理常用词汇是大家解题的时候最重要的基础，需要大家更加深刻的记忆。下面我们就一起来看看这些SAT2物理常用词汇的详细内容吧。

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　　Efficiency

　　For a heat engine, the ratio of work done by the engine to heat intake. Efficiency is never 100%.

　　Elastic collision

　　A collision in which both kinetic energy and momentum are conserved.

　　Electric generator

　　A device that converts mechanical energy to electrical energy by rotating a coil in a magnetic field; sometimes called a “dynamo.”

　　Electromagnetic induction

　　The property by which a charge moving in a magnetic field creates an electric field.

　　Electromagnetic spectrum

　　The spectrum containing all the different kinds of electromagnetic waves, ranging in wavelength and frequency.

　　Electromagnetic wave

　　A transverse traveling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light, m/s. Examples include microwaves, X rays, and visible light.

　　Electron

　　A negatively charged particle that orbits the nucleus of the atom.

　　Electronvolt

　　A unit of measurement for energy on atomic levels. 1 eV = J.

　　Energy

　　A conserved scalar quantity associated with the state or condition of an object or system of objects. We can roughly define energy as the capacity for an object or system to do work. There are many different types of energy, such as kinetic energy, potential energy, thermal energy, chemical energy, mechanical energy, and electrical energy.

　　Entropy

　　The disorder of a system.

　　Equilibrium

　　The state of a nonrotating object upon whom the net torque acting is zero.

　　Equilibrium position

　　The stable position of a system where the net force acting on the object is zero.

　　以上就是关于SAT2物理常用词汇的全部内容，是以字母E开头的。大家可以在备考自己的SAT2物理考试的时候，对此加以适当的练习和应用。

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