What happens to metal railroad tracks during the heat of a summer day
2 answers:
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Answer:
the relative density of the gravel in the field is 0.7365 or 73.65%
Explanation:
Given that;
wet density of gravel = 2.3 Mg/m³
field water content w = 16%
density of solids in lab = 2.70 Mg/m³
Maximum void ratio = 0.59
Minimum void ratio = 0.28
first we determine the dry density of gravel =
/ 1+ w
= 2.3 Mg/m³ / 1 + 0.16 = 2.3/1.16 = 1.9827 Mg/m³
we know that; = 1000 kg/m³ = 1 g/cm³
Specific Gravity of soil G = /
= 2.70 Mg/m³ / 1 = 2.70 Mg/m³
eo = ((G×)/
) - 1
eo = (( 2.70 × 1) / 1.9827 ) - 1
eo = 1.3617 - 1
Co = 0.3617
so Relative density will be;
=
- eo /
-
we substitute
= 0.59 - 0.3617 / 0.59 - 0.28
= 0.2283 / 0.31
= 0.7365 or 73.65%
Therefore; the relative density of the gravel in the field is 0.7365 or 73.65%
Answer:
20 m/s
Explanation:
The speed of a wave is given by:
where
is the wavelength
f is the frequency
v is the speed
For the wave in this problem,
f = 10 Hz is the frequency
is the wavelength
So the speed is