Determine (a) the pressure felt on your palm to hold a textbook of mass 1 kg in equilibrium. assume the distribution of pressure over the palm to be uniform and the area of contact to be 25 cm2. (b) what-if scenario: how would a change in atmospheric pressure affect your answer (0: no change; 1: increase; -1 decrease)?

Explanation:

Given

mass of textbook

area of contact

Pressure is given by  perpendicular force to an area.

(b)If pressure is increased then it will have no effect because pressure applied is same in all direction.

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

the independent variable, or the one that is intentionally manipulated is the speed.