49.What is the output of an AND gate when both the inputs are 0?

[A] 0
[B] 1
[C] Either 0 or 1
[D] 2

The input piston and output plunger of a hydraulic car lift are atthe same level. The cross-sectional area of the input piston is 12cm^2, while that of the output plunger is 1200 cm^2. The force F1applied to the input piston has a magnitude of 140 N. What is theweight W of the car? Neglect the weight of the piston andplunger.

An LR circuit can be used as a "phase shifter." Assume that an "input"source voltage V=V_o*sin(wt+ Phi) is connected across a series combination of an inductor L=55mH and resistor R. The "output" of this circuit is taken across the resistor. If V_o=24V and f=175Hz, determine the value of R so that the output voltage V_R lags the input voltage V by 25 degrees. Compare (as a ratio) the peak output voltage with V_0.

Figure 9.24 (a) In the case of the wheelbarrow, the output force or load is between the pivot and the input force. The pivot IS the wheel's axle. Here, the output force is greater than the input force. Thus, a wheelbarrow enables you to lift much heavier loads than you could with your body alone. (b) In the case of the shovel, the input force is between the pivot and the load, but the input lever arm is shorter than the output lever arm. The pivot is at the handle held by the right hand. Here, the output force (supporting the shovel's load) is less than the input force (from the hand nearest the load), because the Input is exerted closer to the pivot than is the output