How to find the group number of d block elements​

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.

Displacement is the slope of a velocity vs. time graph a. true b. false

What causes most sediment to wash or fall into a river