The four fundamental forces are arranged in the increasing order of their relative strength. (A, B and C represent three of the fundamental forces.) A < weak nuclear < B < C Which statement is true about the fundamental forces represented by A and B? Both have short range. Both have infinite range. Both act only between charged particles. Both act only between uncharged particles.

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?