RECF Mechanical Pre-Test Questions and Verified Answers | Passed | A+

RECF Mech anical Pre -T est Questions and Verified Answers | Passed | A+ in order to raise the arm of a roboy, the last of 4 spur gears in a simple gear train must rotate clockwise. in what direction does the inp ut (first) gear turn? 🗸🗸: counterclockwise a robot has wheels with 4 inch diameter. Each wheel rolls 5 revolutions on a horizontal surface without slipping. how far did the robot travel? 🗸🗸: 62.8 inches which of the following statements is equivalent of the first law of thermodynamics? 🗸🗸: energy cannot be created or destroyed one hot day matt's air conditioner broke. he thought of an idea to cool his house by opening his refrigerator. three hours lat er his house temperature went up by two degrees. why did this happen? 🗸🗸: the condenser on the refrigerator ran constantly 2 two children are playing on a see -saw. the one on the left weighs 80 lbs and the one on the right weighs 100 lbs. if the child on the left is 3 feet from the pivot, how far must the child from the right be for the see -saw to be balanced? 🗸🗸: 2.4 ft which of the following types of gears would be found in a parallel shaft gear train? 🗸🗸: spur gears what type of simple machine is in the nutcracker pictured? 🗸🗸: second class lever a 12 tooth sprocket and a 36 tooth sprocket are connected by a chain. if the 12 tooth sprocket is rotating clockwise, in whag direction is the 36 tooth sprocket turning? 🗸🗸: clockwise suppose an automobile travels 5 miles in 20 minutes. what is the average speed of the car in miles per hour? 🗸🗸: 15 mph