Say that you have 100³
instead of writing and solving 100x100x100 three times to solve it, you can just write 100³
the exponents in scientific notation make the whole process easier.
Away from you. This is known as the Doppler affect. It basically states that if an object is moving away from you the streching of the wave causes a red shift and if the object is moving towards you the compression of the waves causes a blue shift.
True I believe because when the current circuit is at its limit it will be damaged