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
Anna007 [38]
3 years ago
5

If the tensile strength of the Kevlar 49 fibers is 0.550 x 106 psi and that of epoxy resin is 11.0 x103 psi, calculate the stren

gth of the composite material that contains 79 percent by volume of Kevlar 49 fibers. The answer should be in psi with 0 decimals of accuracy.
Physics
1 answer:
Elina [12.6K]3 years ago
4 0

Answer:

\sigma_{tot} =436810 psi

Explanation:

Notation

\sigma_{fib} =0.55x10^6 psi represent the tensile strength for the Kevlar 49 fibers

\sigma_{epox} =11x10^3 psi represent the tensile strength for the epoxy resin

79% by volume is made of Kevlar 49 fibers

The rest 100-79=21% is made of epoxy resin

Tensile strength is a "measurement of the force required to pull something such as rope, wire, or a structural beam to the point where it breaks". Can be defined as "the maximum amount of tensile stress that it can take before failure".

For this case we need to use a basis of calculus since we don't know the total volume but we can assume a reference value on order to make the calculations.

If we assume a total volume of V_{tot}=1 in^3 we can do the follwoing balance:

\sigma_{tot}V_{tot}=\sigma_{fib}V_{fib} +\sigma_{epox}V_{epox}

We can replace the values given:

\sigma_{tot}=(0.55x10^6 psi)(0.79) +(11x10^3 psi)(1-0.79)

\sigma_{tot} =436810 psi

So then the strength of the composite material is : \sigma_{tot} =436810 psi

You might be interested in
2 kg
pochemuha

Answer:

2500 and kg its is very easy do with method

8 0
3 years ago
What name is used for a high-power variable resistor?
const2013 [10]
The answer would be C: Rheostat.  :)
3 0
3 years ago
Read 2 more answers
Name two objects that have a high density.
Sonbull [250]

Answer:

Iron and stone

Explanation:

4 0
3 years ago
Plz, Help!!
SIZIF [17.4K]
C is the first & the second question is A
7 0
3 years ago
Read 2 more answers
Suppose the odometer on our car is broken and we want to estimate the distance driven over a 30 second time interval. We take th
Natalija [7]

Let say for every 5 s of time interval the speed will remain constant

so it is given as

v(mi/h)   16    21    23    26    33    30     28

now we have to convert the speed into ft/s as it is given that 1 mi/h = 5280/3600 ft/s

so here we will have

v(ft/s)      23.5    30.8     33.73     38.13     48.4     44     41.1

now for each interval of 5 s we will have to find the distance cover for above interval of time

d = v \times t

d = (23.5 + 30.8 + 33.73 + 38.13 + 48.4 + 44 + 41.1) \times 5

d = 1298.1 ft

so here it will cover 1298.1 ft distance in 30 s interval of time

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the net force on a bright red mercedes convertible traveling along a straight road at a steady speed of 100 hm/h?
    9·1 answer
  • Near the poles, more energy is reflected back into space than is absorbed. near the poles, more energy is reflected back into sp
    7·1 answer
  • The force of gravity decreases as the ___ between the masses increases
    11·1 answer
  • Plz help!!!<br>urgent!!<br>will give the brainliest!!!​
    5·1 answer
  • A rock of mass M with a density twice that of water is sitting on the bottom of an aquarium tank filled with water. The normal f
    5·1 answer
  • Using energy considerations, calculate the average force a 60.0-kg sprinter exerts backward on the track to accelerate from 2.00
    8·1 answer
  • A girl runs at a speed of 3.9 m/s off a high dive and hit the water 1.8 s later.
    9·1 answer
  • What type of reaction is being shown in this energy diagram?
    14·1 answer
  • Which is an example of an exothermic process?
    12·1 answer
  • 500 kg car takes a car of radius 50m with a velocity of 36km/hr.the centripetal force is​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!