A 50 kg crate is pushed along a flat surface, increasing its speed from 2 m/s to 10 m/s in 5 seconds. Calculate the force applied to the crate during this time.

Suppose one interior angle of a regular polygon measures 160°.  How many sides does the polygon have?

Return piping is connected to a centrifugal pump at the ___.

___ compressors used in chillers are large capacity, positive-displacement compressors that have few moving parts.

The water returning to the chiller from the building is normally at a temperature of about ___.

Low-pressure chillers normally use an orifice-type or a float-type ___.

What is the ADA’s definition of a disability? 

This act enabled the federal government to gather foreign intelligence information by wiretapping American citizens, even searching computers and library records.

It is referred to as the “Cold War” becasue neither the Soviet Union nor the United States officially declared war on each other.  Both sides were afraid of fighting each other directly and creating a nuclear “hot” war.

This husband and wife were convicted of espionage for their role in passing atomic secrets to the Soviet Union during WWII.  The couple was later sentenced to death and were executed.