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Homework * ASC 111 * Group2

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

A solid material exerts a pressure or force ____.
a.
in all directions
b.
downward only
c.
outward and downward
d.
outward only
 

 2. 

A liquid material exerts a pressure or force ____.
a.
in all directions
b.
downward only
c.
outward and downward
d.
outward only
 

 3. 

A vapor material exerts a pressure or force ____.
a.
in all directions
b.
downward only
c.
outward and downward
d.
outward only
 

 4. 

If the temperature remains constant and the volume that a gas occupies increases, the pressure will ____.
a.
decrease
b.
increase
c.
remain the same
d.
cannot be determined from the information given
 

 5. 

The volume of gas varies inversely with the absolute pressure, provided the temperature remains constant. This is called ____.
a.
Charles' Law
b.
Tom's Law
c.
Boyle's Law
d.
Dalton's Law
 

 6. 

At a constant pressure, the volume of a gas varies as to the absolute temperature and at a constant volume the pressure of the gas varies directly with the absolute temperature. This is known as ____.
a.
Charles' Law
b.
Tom's Law
c.
Boyle's Law
d.
Dalton's Law
 

 7. 

The total pressure of a confined mixture of gases is the sum of the pressures of each of the gases in the mixture. This is known as ____.
a.
Charles' Law
b.
Tom's Law
c.
Boyle's Law
d.
Dalton's Law
 

 8. 

A helicopter is lifting an 800-pound unit at a rate of 200 feet per minute. How many horsepower of work energy is the helicopter using in the process?
a.
3.863 hp
b.
4.517 hp
c.
4.848 hp
d.
5.209 hp
 

 9. 

The unit used to measure electrical power is the ____.
a.
volt
b.
ampere
c.
watt
d.
ohm
 

 10. 

One watt of electrical energy is equal to ____.
a.
3.1416 Btu
b.
3.413 Btu
c.
3.3416 Btu
d.
3.3146 Btu
 

 11. 

How many watts of electrical power are equal to 1 horsepower?
a.
33000
b.
15000
c.
746
d.
660
 

True/False
Indicate whether the statement is true or false.
 

 1. 

Specific volume is the term used to indicate the space a weight of gas will occupy.
 

 2. 

As heat is applied to a closed container containing a gas, the pressure inside the container will decrease.
 

 3. 

An example of a fossil fuel is hydrogen.
 

 4. 

A law of conservation of energy states that energy is neither created nor destroyed.
 

 5. 

Heat is a form of energy because of the motion of molecules.
 

Completion
Complete each statement.
 

 1. 

A material that occupies space and has mass is called ____________________.
 

 

 2. 

The three basic states of material are ____________________, ____________________, and ____________________.
 

 

 3. 

The law that states that "energy is neither created or destroyed, but can be converted from one form to another" is called the ______________________________.
 

 

 4. 

Most of the energy we use comes from something we already have on Earth. The only "new" energy we get comes from the ____________________.
 

 

 5. 

____________________ ft/lb of work is accomplished when an 800-lb. condensing unit is lifted to the top of a 40 ft. building.
 

 

 6. 

One horsepower of work energy equals the amount of work done when lifting ____________________ pounds to the height of ____________________ foot in ____________________ minute.
 

 

 7. 

The unit of measurement of electrical power is the ____________________.
 

 

Short Answer
 

 1. 

One pound of ice at 20°F exerts its force downward. After absorbing 200 Btus, what direction(s) will the force be exerted? After absorbing 2000 Btus?
 

 2. 

Define an atom.
 

 3. 

Define a molecule.
 

 4. 

Define density.
 

 5. 

Define specific gravity.
 

 6. 

Define specific volume.
 

 7. 

Define power.
 

Matching
 
 
Match the gas law with its properties.
a.
Boyle’s law
b.
Charles' law
c.
Dalton's law
 

 1. 

V1 / T1 = V2 / T2
 

 2. 

PTOTAL = PSUBSTANCE 1 + PSUBSTANCE 2
 

 3. 

P1 x V1 = P2 x V2
 
 
Match the following terms with their proper units and/or formulas.
a.
specific volume
d.
density
b.
hp
e.
1 kW
c.
specific gravity
f.
work
 

 4. 

force X distance
 

 5. 

3413 Btu
 

 6. 

ft3/lb
 

 7. 

no units
 

 8. 

33000 ft-lb/min
 

 9. 

lb/ft3
 



 
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