Table of Contents
Is it possible to have a negative time?
So to conclude this question, you can give negative time as in countdowns, or past events. But there is no such thing as a negative in a chronological time graph, that starts and ends with positive numbers, unless you consider BC as the negative on the line chart.
Is it possible to have a negative speed why why not?
because speed is a scalar quantity. speed only has magnitude not the direction,so it can never be negative. but velocity can be negative because it has both magnitude as well as direction.
Is negative velocity possible?
Negative velocity just means velocity in the opposite direction than what would be positive. From the math point of view, you cannot have “negative velocity” in itself, only “negative velocity in a given direction”. The velocity is a 3-dimension vector, there is no such thing as a positive or negative 3D vector.
Why is Excel showing instead of date?
Microsoft Excel might show ##### in cells when a column isn’t wide enough to show all of the cell contents. Formulas that return dates and times as negative values can also show as #####. If dates are too long, click Home > arrow next to Number Format, and pick Short Date.
Why are some parts of the universe not visible to US?
Some parts of the universe are too far away for the light emitted since the Big Bang to have had enough time to reach Earth, and so lie outside the observable universe. In the future, light from distant galaxies will have had more time to travel, so additional regions will become observable.
Could the universe have had a bounce instead of a bang?
With a bounce rather than a bang, Steinhardt says, distant parts of the cosmos would have plenty of time to interact with each other, and to form a single smooth universe in which the sources of CMB radiation would have had a chance to even out. In fact, it’s possible that time has existed forever.
Could we ever reach the edge of the observable universe?
Ultimately, this means that we could only reach the edge of the observable universe if we develop a method of transport that allows us to either 1) Travel faster than the speed of light (something which most physicists think is impossible) 2) Transcend spacetime (by using wormholes or warp drive, which most physicists also think is impossible).
Did the universe come from nothing?
Image Credit: Chaoss/Shutterstock Many scientists assume that the universe came from nothing, which is an idea that can only be true in light of quantum theory. Ultimately, quantum fluctuations could allow a universe to spontaneously form from nothing.