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SAT2物理考试中常用词汇总结(H开头)
来源:毕达教育 发布时间:2018-08-15 16:56:49
下面为大家整理的是以字母H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。
Half-life
The amount of time it takes for one-half of a radioactive sample to decay.
Harmonic series
The series of standing waves supported by a string with both ends tied down. The first member of the
series, called the fundamental, has two nodes at the ends and one anti-node in the middle. The higher harmonics are generated by placing an integral number of nodes at even
intervals over the length of the string. The harmonic series is very important in music.
Heat
A transfer of thermal energy. We don’t speak about systems “having” heat, but about their “transferring”
heat, much in the way that dynamical systems don’t “have” work, but rather “do” work.
Heat engine
A machine that operates by taking heat from a hot place, doing some work with that heat, and then
exhausting the rest of the heat into a cool place. The internal combustion engine of a car is an example
of a heat engine.
Heat transfer
A transfer of thermal energy from one system to another.
Hertz (Hz)
The units of frequency, defined as inverse-seconds (1 Hz = 1 s–1). “Hertz” can be used interchangeably
with “cycles per second.”
Hooke’s Law
For an oscillating spring, the restoring force exerted by the spring is directly proportional to the displacement.
That is, the more the spring is displaced, the stronger the force that will pull toward the equilibrium position.
This law is expressed mathematically as F = –kx, where F is the restoring force and x is the displacement. The constant of proportionality, –k, is the
spring constant.
Hypotenuse
The longest side of a right triangle, opposite to the right angle.
以上就是关于SAT2物理考试常用词汇的全面内容,是以H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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