The total charge a battery can supply is rated in ma⋅h, the product of the current (in ma) and the time (in h) that the battery can provide this current. a battery rated at 1000 ma⋅hr can supply a current of 1000 ma for 1.0 h, 500 macurrent for 2.0 h, and so on. a typical aa rechargeable battery has a voltage of 1.2 v and a rating of 1800 ma⋅h. for how long could this battery drive current through a long, thin wire of resistance 28 ω ?

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

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Asystematic approach to problem solving is called a (an)