1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tresset_1 [31]
3 years ago
15

What is the porosity of the sand sample?(The sediment volume for each sample is 400ml.) a. 90.25% b. 72.00% c. 25.50% d. 16.75%

Physics
2 answers:
Katyanochek1 [597]3 years ago
7 0
C.25.50% Hope this helps.
OLEGan [10]3 years ago
4 0

Answer: c. 25.50%

Soil porosity refers to the amount of pores, or open spaces present between the soil particles. Soil porosity is an important property of soil. It allows the absorption of water and air through the particles of soil. The loose soil will have separated particles of soil hence, will have high porosity. The dense and compact soil particles will have less porosity because compaction decreases the pores inside the soil. Sand is a soil which has particles finer than gravel and coarser than silt. The particles of sand remains loose hence, it will exhibit     particles of small grain size with low porosity and high drainage. Therefore, the porosity of sand sample is 25.50%.  

You might be interested in
I need this fast can you help me o give 12 points
Elanso [62]
Water as it's the highest specific heat capacity
Hope this helps x
7 0
3 years ago
Read 2 more answers
Based on the data given, in what direction will the car accelerate?
skad [1K]
Vertical forces:
There is a force of 579N acting upward, and a force of 579N
acting downward.
The vertical forces are balanced ... they add up to zero ...
so there's no vertical acceleration. 
Not up, not down.

Horizontal forces:
There is a force of 487N acting to the left, and a force of 632N
acting to the right.
The net horizontal force is

        (487-left + 632-right)  -  (632-right - 487-right) =  145N to the right.

The net force on the car is all to the right.
The car accelerates to the right.
7 0
2 years ago
An object has the acceleration graph shown in (Figure 1). Its velocity at t=0s is vx=2.0m/s. Draw the object's velocity graph fo
timama [110]

Answer:

Explanation:

We may notice that change in velocity can be obtained by calculating areas between acceleration lines and horizontal axis ("Time"). Mathematically, we know that:

v_{b}-v_{a} = \int\limits^{t_{b}}_{t_{a}} {a(t)} \, dt

v_{b} = v_{a}+ \int\limits^{t_{b}}_{t_{a}} {a(t)} \, dt

Where:

v_{a}, v_{b} - Initial and final velocities, measured in meters per second.

t_{a}, t_{b} - Initial and final times, measured in seconds.

a(t) - Acceleration, measured in meters per square second.

Acceleration is the slope of velocity, as we know that each line is an horizontal one, then, velocity curves are lines with slopes different of zero. There are three region where velocities should be found:

Region I (t = 0 s to t = 4 s)

v_{4} = 2\,\frac{m}{s}  +\int\limits^{4\,s}_{0\,s} {\left(-2\,\frac{m}{s^{2}} \right)} \, dt

v_{4} = 2\,\frac{m}{s}+\left(-2\,\frac{m}{s^{2}} \right) \cdot (4\,s-0\,s)

v_{4} = -6\,\frac{m}{s}

Region II (t = 4 s to t = 6 s)

v_{6} = -6\,\frac{m}{s}  +\int\limits^{6\,s}_{4\,s} {\left(1\,\frac{m}{s^{2}} \right)} \, dt

v_{6} = -6\,\frac{m}{s}+\left(1\,\frac{m}{s^{2}} \right) \cdot (6\,s-4\,s)

v_{6} = -4\,\frac{m}{s}

Region III (t = 6 s to t = 10 s)

v_{10} = -4\,\frac{m}{s}  +\int\limits^{10\,s}_{6\,s} {\left(2\,\frac{m}{s^{2}} \right)} \, dt

v_{10} = -4\,\frac{m}{s}+\left(2\,\frac{m}{s^{2}} \right) \cdot (10\,s-6\,s)

v_{10} = 4\,\frac{m}{s}

Finally, we draw the object's velocity graph as follows. Graphic is attached below.

3 0
3 years ago
A reconnaissance plane flies 605 km away from
kolezko [41]

Answer:

                      v_{avg}  = 355 m/s  

Explanation:

Distance = 605 km

Initial speed = v_{i} = 284 m/s

Final velocity = v_{f} = 426 m/s

Average speed = ?

There is two method two find average speed. In first method, using 3rd equation of motion, we find acceleration.

                        2as = v_{f}^{2}+v_{i}^{2}

Then using first equation of motion, we find time

                        v_{f} = v_{i}+at

Then using the formula of average velocity, we find average velocity

                         v_{avg}=\frac{total-distance}{total-time}

Second method is very simple

                                  v_{avg}=\frac{v_{f}+v_{i} }{2}

                                   v_{avg}=\frac{426+284}{2}

                                   v_{avg}  = 355 m/s      

8 0
3 years ago
As you approach a roundabout, you should __________________.
motikmotik
The answer should be B
8 0
3 years ago
Read 2 more answers
Other questions:
  • A 90 kg painter is standing on a horizontal wooden scaffolding of length 10 m, which is supported on each end by a rope. The pai
    10·1 answer
  • With what force will a car hit a tree if the car has a mass of 3,000 kg and it is accelerating at a rate of 2m/s2
    5·1 answer
  • Which pollution is a major problem resulting from the _______ industry in eastern Alberta, Canada
    5·1 answer
  • Which of the following forms of light can be observed with telescopes at sea level?Select all that apply.Select all that apply.X
    7·1 answer
  • If the distance of a charged particle from a wire changes from 10cm to 20 cm , what happens to its magnetic field
    5·2 answers
  • A uniform steel rod of cross-sectional area A is attached to rigid supports and is unstressed at a temperature of 458F. The stee
    13·2 answers
  • Suppose the electric company charges 10 fils per kW h. How much does it cost to use a 125 watt lamp 4 hours a day for 30 days? A
    11·1 answer
  • HELP DUE 3 MINUTESSSSD
    11·1 answer
  • Cuando es más confiable el valor central de una medición
    10·1 answer
  • Select the correct arrow.<br> Which arrow correctly shows the flow of heat?<br> Reset<br> Next
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!