Define a vacuum
A) A vacuum is a negative pressure.
B) A vacuum is any pressure less than atmospheric pressure.
C) A vacuum is anti-pressure created by counterclockwise molecular rotation.
D) Vacuum is the reciprocal of pressure. For every pressure there is a reciprocal vacuum.
B
You might also like to view...
With polar coordinates, the ____________________ value is always given first and represents the distance of the point from the center point.
Fill in the blank(s) with the appropriate word(s).
What are the proportion principles?
What will be an ideal response?
Technician A says that in an articulated combination,the primary circuit is responsible for actuating thetractor rear wheelbrakes and the trailer service brakes when applied from the foot valve.Technician B says that the foot valve is also known as a treadle valve or dual-circuit application valve. Who is correct?
A. Technician A B. Technician B C. Both D. Neither
For the circuit shown in Fig. 2.116, find the equivalent resistance. All resistors are 3 ?.
 FIGURE 1.png)