Twin sisters, gwen and jackie, were both 20 years old in the year 2000. jackie took off on a round trip to vega, 25 light years away. she traveled at an average speed very close to the speed of light—say, 0.c. according to gwen back on earth, about how long does it take jackie to reach vega?

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

Which is the most accurate name for the ionic compound cas?