Excluded volume effect of a linear polymer chain grafted on a surface

Smallest intensity of a stimulus that you can detect 50 percent of the time is

When a pair of 10-n forces act on a box of candy, the net force on the box is a 20 n. b about 14 n. c zero. d any of the above depending on the directions of forces.

The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength