Which of the following describes a strong base? a. a strong base fully dissociates. b. a strong base does not dissociate. c. a strong base contains oh+ ions. d. a strong base partially dissociates.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.