Wave Speed
Wave speed is given in meters per second (the number of waves that pass per second). Wavelength is measured in meters and frequency is measured…
Half Life
The radioactivity of a sample decreases over time. Half life is a measurement of this decrease. What is Half life? The radioactivity of a…
Efficiency
The efficiency of a device is the proportion of input energy that is converted to useful energy. What is Efficiency? The efficiency of a…
Transformers
A transformer is an piece of electrical apparatus which will increase or decrease the voltage in an alternating current. It can be designed to “step up”…