For a total of 8 hours, Mackenzie rode her motorcycle down a freeway at 60 kilometers per hour. There was a car behind her for one-quarter of that time. How far did Mackenzie ride while the car was behind her? Write the answer as a whole number.​

Asimple electrochemical cell contains two electrodes.

Now assume that tweedledum applies an upward force at the far left end of the board (fleft) and that tweedledee applies an upward force at the far right end of the board (fright). with what force does each person lift? recall that the weight of the board is w.

Sound travels about 1460 meters per second in water. how deep is a wreck on the sea floor if it takes 4 seconds for a sonar signal to return following transmission? a) 2920 meters b) 1460 meters c) 5840 meters d) 365 meters