(3 points)draw a picture of a voltaic electrochemical cell using lead (pb) and iron (fe) metals and their 2+ cations. be sure to label the following: anode, cathode, salt bridge, the metals, and the contents of each solution. take care to follow the conventions when drawing the cell. assume the fe is the anode.

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat