Which two statements about digital data are true? A. A virus can change or destroy digital data that are stored on a
computer
B. It is difficult to accidentally delete the data.
C. A virus prevents digital data from being changed or stolen on a
computer.
D. The quality of copies stays the same as more copies are made.

What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?

In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.

As the distance from a magnet increases, what happens to the magnet force?