A student took a calibrated 200.0 gram mass, weighed it on a laboratory balance, and found it read 196.5g. What was the student's percent error?

the awnser is d you right bro                      

earth's neighboring galaxy, the andromeda galaxy, is a distance of 2.54×107 light-years from earth. if the lifetime of a human is taken to be 70.0 years, a spaceship would need to achieve some minimum speed min to deliver a living human being to this galaxy.