Alternating current (ac) frequency is the number of cycles per second in an ac sine wave. Frequency is the rate at whichcurrentchanges direction per second. It is measured in hertz (Hz), an international unit of measure where 1 hertz is equal to 1 cycle per second. Hertz (Hz) = One ...
1. In general, frequency is a measurement of how often something happens. In science and technology, frequency is measured in Hz (hertz).2. Concerning a CPU (Central Processing Unit), frequency refers to the processor's operational clock cycles per second. The frequency of most modern CPUs ...
百度试题 题目The number of cycles per second is the wave's _ which is measured in hertz. A.frequencyB.periodC.ICD.AC相关知识点: 试题来源: 解析 A 反馈 收藏
Frequency and intensity of treatment are the two key parameters of any PEMF therapy device.Frequency is measured in hertz (Hz) and intensity in gauss (G). How to set these parameters? Again, it depends. The universal advice is to follow the doctor’s instructions. However, the doctor does ...
Frequencyis a property of a wave that shows how many waves pass a given point per second. It is measured in hertz (Hz). Frequency applies to sound and electromagnetic waves. For instance, a sound might have a frequency of 450 Hz. ...
Analog signal frequency is measured inhertz. Their frequency describes the number of times they go up and down in a second. Electrical engineer and mathematician Claude Shannonexplained the theoremas follows: "If a function x(t) contains no frequencies higher than B hertz, it is completely deter...
Light is measured in many units. Its wavelength, λ, is measured in both ...ngstroms and nanometers. Its frequency is measured in Hertz. Its energy is usually measured in electron-volts (eV), since Joules are too large to be practical. Its red-shift is measured in either short-distance...
f - frequency measured in hertz (Hz). Capacitor's reactance Capacitor's impedance Cartesian form: Polar form: ZC=XC∟-90º Capacitor types Variable capacitorVariable capacitor has changeable capacitance Electrolytic capacitorElectrolytic capacitors are used when high capacitance is needed. Most of the...
The frequency measures the number of periods per second – how many crests and troughs there are in the timespan of one second. Frequency is expressed in hertz: if there are 20 periods in a second, the frequency is 20 Hz. Wavelength This tells us how far the wave has travelled after ...
读出英文,说出中文意思,整个过程录音并上传 1、A periodic waveform is one that repeats itself at a fixed interval, called a period (T ). The frequency (f ) is the rate at which it repeats itself and is measured in hertz (Hz). The relationship b..