Remember, everything is relative. Hence, there is no such thing as an absolute speed - a speed must always be specified in relation to something.
From observations of large amounts of galaxies near us, it seems that we are moving with a speed of about 600 km/sec. Note that this is just the speed in relationship to nearby, or observable, objects. A speed compared to "the Universe" doesn't really make much sense.
Any such speed must be specified with relation to something: for example, with relation to the Andromeda Galaxy, the average of the Local Group, of the Local Supergroup, etc. There is no such thing as an "absolute speed".
There is no such thing as the "center of the Universe". It is believed that the Universe looks the same from different places, there is no way to determine a "center". The farthest observable galaxies move away from us, at several times the speed of light.
around the sun + sun in galaxy+galaxy in space= speed earth?
Speed. All photons traveling through a vacuum travel at the speed of light.
False
The question cannot be answered because you need a fixed reference point against which to measure the speed (or velocity) of the earth through the universe. What would this be? The sun (or centre of the solar system)? But that travels round the centre of the Milky Way Galaxy. The centre of Milky Way? But that travels around the centre of our local cluster. The centre of our local cluster? No, because that travels round ... and so on.
With current technology, that's not possible. At the speed of light, it would take you tens of thousands of years to leave our galaxy. The speed of light seems to be a speed limit in the Universe, and current technology is nowhere near travelling the speed of light.
The speed of a wave depends on the medium it is traveling through.
When the light is traveling through vacuum.
The term "speed of light" refers to the speed of light (or any other electromagnetic wave) in a vacuum. This speed - about 300,000 km/second - is generally accepted as a kind of speed limit in the Universe - no matter, energy, or information can travel faster than that.
It depends on the substance the sound is traveling through. If the sound is traveling through air, it is usually about 800km/h. If it is traveling through water, the speed is about 4000km/h. If it is traveling through cosmos, its speed is 0km/h.
Electrons are able to travel close to speed of light.