Which advantage of stored digital data could also be a disadvantage? O A. Systems have been developed to protect stored digital data.
O B. Stored digital data can be copied perfectly time after time.
C. Stored digital data are reliable. D. Information in stored digital data can be quickly changed.

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Which radioisotope is used in dating geological formations?