What happens if you break a magnet in half? a) each half will be a new magnet, with both a north and south pole. b) one half will have a north pole only and one half will have a south pole only. c) neither half will have a pole. d) neither half will be able to attract or repel

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

Define a is a tiny pavket of energy

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.