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SAT2物理考试中常用词汇总结(E开头)
来源:毕达教育 发布时间:2012-01-12 10:33:35
下面为大家整理的是以字母E开头的SAT2物理考试中常用词汇。掌握一定的物理词汇是备考SAT2的首要前提。所以,各位考生一定要多加重视词汇的积累,预祝各位考生考试成功。
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物理考试常用词汇的全面内容,是以E开头的。各位考生可以作为备考时的参考资料,希望对各位考生的SAT2考试有所帮助。
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