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

Trades & Technology

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).

Trades & Technology

What are the proportion principles?

What will be an ideal response?

Trades & Technology

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

Trades & Technology

For the circuit shown in Fig. 2.116, find the equivalent resistance. All resistors are 3 ?.

Trades & Technology