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
stiv31 [10]
3 years ago
15

A concrete pump of 120-cy/hr max. output is used to place 250 cy of concrete. It is supplied by 8 cy transit-mix trucks arriving

to the site every 15 mins. Barring interruptions how many hours will the operation require, considering 80% efficiency factor.
Physics
1 answer:
attashe74 [19]3 years ago
8 0

Answer:

Completing the operation will require 9.765625 hours.

Explanation:

First, let's check which of the stages will be the process limitation:

Regarding the pump, it can perform up to 120 cy/h. The trucks will deliver 8 cy every 15 min, i.e., 32 cy/h, then this is the smaller capacity within the whole process.

Now, let's establish a simple relation:

Placement speed x Efficiency = Placed quantity / time,

solving for time. we have

t = \frac{q}{\epsilon s} = \frac{250 cy}{0.8\times 32\frac{cy}{h}} = \mathbf{9.765625 h}.

You might be interested in
If your vehicle has a steering wheel lock, should you ever turn off the ignition while it is moving?
umka2103 [35]

It is not advisable to turn off the ignition while it is moving, so it is a no. Why? Even though the vehicle has steering wheel lock, turning off the ignition while it is moving is not advisable because it causes the vehicle to lose out of control, leading to complications and accidents.

5 0
3 years ago
One student bangs two bricks together
Romashka-Z-Leto [24]

Answer:

This could be done if a stop watch is used to calculate the time taken to hear the echo and a rule should be used to calculate the distance between the bricks and the wall. Then divide distance by time

Explanation:

I hope this is what you need

PLEASE MAKE ME BRAINLIEST

7 0
3 years ago
What are the factors that affect the size of an impact crater?
tatiyna

Answer:

The following factors could be responsible for size of an Impact Crater:

  • Geography of the region where it impacted.
  • Size of the Impactor
  • Velocity of the Impactor

Hope it helps!<3

5 0
3 years ago
An object with little mass won't require a lot of force to move.
Anna35 [415]

Answer:

True

Explanation:

Heavier objects (objects with more mass) are more difficult to move and stop. Heavier objects (greater mass) resist change more than lighter objects. Example: Pushing a bicycle or a Cadillac, or stopping them once moving. The more massive the object (more inertia) the harder it is to start or stop.

7 0
3 years ago
- A thin film of oil * (n = 1.45) on a puddle of water, producing different colors. What is the minimum thickness of a place whe
Darya [45]

Answer:

There will be a phase change at the first interface and no phase change at the second interface:

If the film is 1/4 wavelength thick this restriction will hold

The wavelength of the light in oil is 545 nm / 1.45 = 376 nm

376 nm / 4 = 94 nm

"D" is correct

4 0
3 years ago
Other questions:
  • You would have the largest mass of gold if your chunk of gold weighed 1 N on
    12·2 answers
  • Which of the follwoing is not an example of an abiotic factor?
    11·2 answers
  • When you double the distance between a pair of charged particles what happens to the force between them?
    5·1 answer
  • Which of the following is a vector quantity?
    13·1 answer
  • We are just a bunch of molecules that hang out together but don't touch each other. Is this believable? If this is the case, wha
    10·1 answer
  • Help please? thank you
    8·1 answer
  • A roller coaster car starts at a height of 90 M at Point a and is moving at a speed of 20 m per second on a later Hill at Point
    12·2 answers
  • Car A with a mass of 725 kilograms is traveling east at an initial velocity of 15 meters/second. It collides head–on with car B,
    13·1 answer
  • What does the number, or density, of field lines on a source charge indicate?
    7·2 answers
  • Which is a property of every<br> mixture?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!