19. Engine oil should always be checked with the engine running. TrueFalse 20. The starter turns the flywheel of the engine. TrueFalse 21. The transmission is a part of the power train. TrueFalse 22. Stop-and-go city driving is easier on a car than highway driving. TrueFalse 23. In a car that has a catalytic converter, you should use unleaded gasoline. TrueFalse

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2