An induction clutch works by __________.
Answer(s): A
An induction clutch is a magnetic clutch.
If a first class lever with a resistance arm measuring 2 feet and an effort arm measuring 8 feet are being used, what’s the mechanical advantage?
Answer(s): B
Mechanical advantage can be calculated as Length of Effort Arm ÷ Length of Resistance Arm. MA = 8 ÷ 2 = 4.
The bottoms of four boxes are shown above. The boxes all have the same volume.If postal regulations state that the sides of a box must meet a minimum height, which box is most likely to be too short to go through the mail?
Answer(s): D
The box with the largest area on the bottom will have the shortest sides.If length × width × height = volume, and all the boxes have equal volume, then the sides must be shortest on the box with the largest area on the bottom.Calculate the area of each box bottom:NO. 1 = 20 square inches;NO. 2 = 35 square inches; NO. 3 = 48 square inches; and NO. 4 = 27 square inches.NO. 3, which has the largest area, will have the shortest sides.
Looking at the figure above, when Cat B lands on the seesaw, Cat A will .
Answer(s): C
Cat B landing on the seesaw will propel Cat A into the air.
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