Question

can
you tell if a substance will float or sink if you only know its
specific gravity? explain

Answer #1

Specific gravity of an object- is defined as the ratio of the density of the object to the density of the water .

If the specific gravity of an object is less than one,the object will float,because the density of the object is lesser than that of water(read the definition carefully)

If the specific gravity of an object is more than one ,the object will sink,because the density of the object is more than that of water

If the specific gravity of an object is equal to one the object will neither sink nor float ,since density of the object and water are equal

**Hence specific gravity alone is sufficient to say
whether an object will sink or float**

A. Will a solid piece of wood with a specific gravity equal to
0.850 float or sink in cooking oil (specific gravity equals 0.680)?
If it floats, how much of the wood volume is submerged?
B. would the same piece of wood sink or float in water? If it
floats, what fraction of the word is submerged?
C. if cooking oil is added to the word as it rests in the
water, does the word float higher in the water...

How can a submarine choose to sink or float?
If a boat in a canal lock
sank, would the water level in the lock rise or fall?

Can you tell whether a binary number is even or odd
only by inspecting the digit in the 1s place? is that always
possible for an arbitrary base?
if you could, can you explain why or why not?
thanks

1. What does a (alpha), the coefficient of linear expansion,
tell us about a substance? Can a (alpha) be negative? Explain what
this means. Can it be zero? Explain.
2. What material has the grater coefficient of linear expansion,
aluminum or brass?
3. In general, what would a negative number for the value of a
(alpha) mean? Name a common substance which exibits this behavior
and under what conditions. (Hint: it is a liquid)

If the return value doesn't tell you what testlist contains, how
can you know anything happened?

You are present with a baker of fluid that you think is olive
oil(which can have a specific gravity of 0.91-0.92 depending upon
the "grade" of oil). You are also given a block of paraffin wax
that is 2mm x 5mm x 10mm in shape, that has a specific gravity of
0.82-0.96. report all the calculation results to 3 significant
digit accuracy.
a) First you place the block of paraffin into a baker of
distilled water(SG=1) , with the 2mm...

You can determine the index of refraction of a substance by
determining its critical angle.
(a) What is the index of refraction of a substance that has a
critical angle of 53.4° when submerged in water? (Round your answer
to at least two decimal places.) n = What is the substance, based
on this table? ---Select--- (diamond,crown glass, flint glass,
polystyrene.plexiglass, crystalline quartz, zircon)
(b) What would the critical angle be (in degrees) for this
substance in air?

How do you know that heat is a form of energy? Explain that heat
is not a substance that flows from a hotter body to a colder one.
Refer to specific observations. What is special about the form of
energy known as heat?

QUESTION 5
When using the sink/float method to determine the similarities
in densities between two objects
two immiscible liquids are chosen
two liquids with identical densities are chosen
the liquids chosen must contain bromine
the particles will settle at the same level
the particles will show buoyancy depending upon their size
10 points
QUESTION 6
A dispersion curve
allows for the determination of the density of a substance
shows the relationship between wavelength and refractive
index
is a means...

Tell me three things that you know about what you know about
"clinical microbiology?" What is covered in this branch of
microbiology and how will this relate to a nurse working in a
doctors office or hospital? What topics do you think will be
covered in this module? What would you like to learn?

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