Helen keller was stricken with scarlet fever as an infant and ended up blind and with no hearing. her ability to speak didn't occur until she was nearly adult. what area of the brain was severely affected by the scarlet fever?
a)occipital lobe
b)frontal lobe
c)cerebellum
d)temporal lobe

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

What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?