A ____ beam atomic clock is used to produce the pulses that are transmitted by the radio station WWV.

A. rubidium
B. cesium
C. francium
D. lithium


Answer: B

Trades & Technology

You might also like to view...

Flowers to be used in arrangements are called _____

a. potted plants c. cut flowers b. flowering plants d. carnivorous

Trades & Technology

Technician A says that circuits using semiconductors may also be known as solid state circuits. Technician B says that the process of introducing a precise amount of impurity to a pure semiconductor material is known as doping. Who is right?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

Trades & Technology

Hip roofs covering a whole house have a minimum of ____ planes, and those covering porches or additions have at least three.

A. two B. four C. five D. six

Trades & Technology

Vitally important is evidence of good rear feet and leg structure and:

A. mobility B. endurance C. speed D. balance

Trades & Technology