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
lisabon 2012 [21]
3 years ago
13

A contractor needs to excavate 50,000 yd3 of silty clay and haul it with Caterpillar 69C dump trucks. Each truck can carry 30.9

yd3 of soil per load, and operates on a 15-minute cycle. The job must be completed in five working days with the trucks working two 8-hour shifts per day. Using a bulking factor of 30%, how many trucks will be required
Engineering
1 answer:
zalisa [80]3 years ago
5 0

Answer:

Number of trucks required = 203

Explanation:

Calculate the amount of soil need to be excavated from the borrow site by using the following equation:

VF = Vf + (◇V/◇Vf) × Vf

Here,  ◇V is change in volume during grading, Vf  is the Volume of fill, and ◇V/◇Vf  is the bulkage factor

Substitute in the equation.

VF = 50000 + (30/100) 50000

VF = 50000 + 15000

VF = 65000yd^3

Number of trucks needed = (Truck cycle time / Excavator time ) × VF

Number of truck heeded= (15 / (16× 5 ×60) × 65000

Number of trucks = 975000/ 4800

Number of trucks = 203

You might be interested in
How much to build a barber clipper?
goldenfox [79]
Like the price to manufacture?
8 0
3 years ago
What is the first test you should do when checking the charging system?
yan [13]

Answer:

Connect the test light in series with the negative post, and start pulling feed wires. The first to check is the heavy charging wire from the alternator. A bad or leaky diode in an alternator is a very common source of overnight battery drain. Connect wires one at a time to see what lead is drawing current.

8 0
2 years ago
Write a Python program that does the following. Create a string that is a long series of words separated by spaces. The string i
dybincka [34]

Answer:

The code is attached.

Explanation:

I created a string s including 6 colors with spaces in between. Then I converted the string into a list x by using split() method. I used three different methods for removing elements from the list. These methods are remove(), pop() and del.

\\ Then I used methods append(), insert() and extend() for adding elements to the list.

\\ Finally I converted list into a string using join() and adding space in between the elements of the list.

4 0
3 years ago
A lake has a carrying capacity of 10,000 fish. At the current level of fishing, 2,000 fish per year are taken with the catch uni
arlik [135]

Answer:

The population size would be p' = 5000

The yield would be    MaxYield = 2082 \ fishes \ per \ year

Explanation:

So in this problem we are going to be examining the application of a  population dynamics a fishing pond and stock fishing and objective would be to obtain the maximum sustainable yield and and the population of the fish at the obtained maximum sustainable yield,  so basically we would be applying an engineering solution to fishing

 

    So the current  yield which is mathematically represented as

                               \frac{dN}{dt} =   \frac{2000}{1 \ year }

 Where dN is the change in the number of fish

            and dt is the change in time

So in order to obtain the solution we need to obtain the  rate of growth

    For this we would be making use of the growth rate equation which is

                                      r = \frac{[\frac{dN}{dt}] }{N[1-\frac{N}{K} ]}

  Where N is the population of the fish which is given as 4,000 fishes

          and  K is the carrying capacity which is given as 10,000 fishes

             r is the growth rate

        Substituting these values into the equation

                              r = \frac{[\frac{2000}{year}] }{4000[1-\frac{4000}{10,000} ]}  =0.833

The maximum sustainable yield would be dependent on the growth rate an the carrying capacity and this mathematically represented as

                      Max Yield  = \frac{rK}{4} = \frac{(10,000)(0.833)}{4} = 2082 \ fishes \ per \ year

So since the maximum sustainable yield is 2082 then the the population need to be higher than 4,000 so in order to ensure a that this maximum yield the population size denoted by p' would be

                          p' = \frac{K}{2}  = \frac{10,000}{2}  = 5000\ fishes          

7 0
3 years ago
Read 2 more answers
You can change lanes during a turn long as there’s no traffic and you driving slowly
Vanyuwa [196]
Your allowed to switch lanes as long as the road is clear and you use signals.
5 0
3 years ago
Other questions:
  • Answer every question of this quiz
    7·1 answer
  • What is the capacity of the machine in batches?
    10·1 answer
  • Remember from Lab 3C that Mad Libs are activities that have a person provide various words, which are then used to complete a sh
    11·1 answer
  • A rod of length L lies along the x axis with its left end at the origin. It has a nonuniform charge density λ = αx, where α is a
    14·2 answers
  • 1. A fixed-geometry supersonic inlet starts at a Mach number of 3. After starting, the cruise Mach number is 2, and the operatin
    13·1 answer
  • 6
    5·1 answer
  • You talk with the owner and he likes the idea of using two large glulam beams as shown to carry the joist loads. Design the glul
    5·1 answer
  • When do you need to apply for program completion and review?
    11·1 answer
  • In the planning process of the product development life cycle what is it important to inventory
    7·1 answer
  • Which of the following characteristics would not give animals an advantage in the ocean?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!