Tire pressure gauges are often calibrated in pounds per square inch. An automobile tire is inflated to a pressure of 29.2 psi. Express this pressure in atmospheres and in millimeters Hg.

what is the question?

i think it's letter a.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.