Antennas are transducers that convert radio-frequencies into alternating currents. The simplest kind of antenna is a length of wire, connected at one end to a transmitter or receiver.
Answer:
We know that sin(x) = cos(90°-x). In that sense, we know that:
sin(25°) = cos(90°-25°) = cos(65°)
If you put both values in a calculator, we get that:
sin(25°) = 0.4226
cos(65°) = 0.4226
Therefore: Sin 25° = Cos 65°
The correct answer is - greenhouse gases.
The humans have been having a very big impact on the composition of the atmosphere in the past century, and that has started to result into changes in the climate patters all over the globe.
The main problem appears with the huge amounts of greenhouse gases released into the atmosphere, mostly carbon dioxide, but also methane. These two gases have properties that enable the greenhouse effect, which means that they are able to trap bigger amount of heat in the Earth's atmosphere, thus making it warmer.
If the ongoing trend continuous with the release of the greenhouse gases there will for sure be devastating effects on everyone and everything on the planet not so far in the future.
Measuring earthquakes is important for a range of reasons. These include: to allow seismologists and other scientists to develop their understanding of earthquakes and their causes. to allow us to make meaningful comparisons between earthquakes to make planning and risk assessment more meaningful and effective.
plates under the ground rub together at a strong and fast rate and it makes a earthquake
