Ahigh tech company operates a satellite which can measure the size of features on the surface of the earth. they use this technology to measure a particular rectangular field and find it's length to be 566 \pm± 1.72 (in meters) and it's width to be 82 \pm± 1.74 (in meters). they plan to report the area of the field as a\pm\delta aa ± δ a in units of acres. (1 acre = 4840 square yards & 1 meter = 1.094 yards) what is \delta aδ a?

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?