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Suppose a student rubs a Teflon rod with wool and then briefly touches it to an initially neutral aluminum rod suspended by insulating threads.

What is the ratio of the number of power strokes in the two-stroke cycle divided by the number of power strokes in the four-stroke cycle at a given value of engine revolutions per minute?

A signal whose timing is completely influenced by the traffic volumes, when detected, on all of the approaches operates in the following mode: a. Pretimed b. Semi-actuated c. Fully-actuated

In laminar now, fluid particles are constrained to motion in (parallel - perpendicular opposite) paths by the action of (temperature - viscosity - pressure).

The fouling on the heat exchanger surfaces causes additional thermal resistance, thus decreases the heat transfer rate. a) - True b) - False

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If 6 men or 8 women can finish a work in 12 days, 9 men and 12 women will finish the work nearly?

5) A 80-kg man has a total foot imprint area of 480 cm2. Determine the pressure this man exerts on the ground if (a) he stands on both feet and (b) he stands on one foot.

A car with an initial speed of 50 km/h accelerates at 5000 km/h2 along a straight road. a. How long will it take to reach a speed of 120 km/h?

If high beam headlights are used improperly, it could cause glare for an oncoming driver or reduce their visibility greatly, increasing the possibility of a collision. a) b) True False