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
VMariaS [17]
2 years ago
9

While walking past a construction site, a person notices a pipe sticking out of a second floor window with water pouring out. As

the water flows to the ground, it speeds up due to the effect of gravity. How does the diameter of the flowing stream of water change as it descends? Assuming that the flow remains laminar, its diameter decreases. stays the same. increases.
Physics
1 answer:
sukhopar [10]2 years ago
8 0

Answer:

The flow diameter decreases.

Explanation:

From continuity equation,

Q = AV = constant

Where A is the area of the pipe which is proportional to its diameter.

V is the velocity of flow of fluid.

Q is the flow rate.

Let us consider the flow rate through the pipe. Assuming a steady state flow, if the velocity should increase, then the diameter will decrease.

For the flow leaving the pipe and descending to the floor, the flow is accelerated under gravity as it leaves the pipe. This acceleration causes its velocity to increase and consequently causing a reduction in the flow area. The result is the narrowing of the water that flows towards the floor (provided the flow remains laminar).

You might be interested in
Why are some animals and plants can become pests when introduced into Australia
Yanka [14]
<span>Plants there are a lot. Australian plants are extremely hardy an have adapted to grow in conditions others have not. So when taken outside of Australia they do very, very well. Animals, less so. But there are a few very interesting cases.

</span>
8 0
3 years ago
A 2000kg suv accelerates from rest at a rate of 3.00m/s^2. The total amount of force resisting its motion 1500N. How much force
choli [55]

The total force that the SUV exerts is:

F = 2000 kg * 3 m/s^2

F = 6000 N

 

Since a resisting force amounting to 1500 N is exerted, then the force exerted by the SUV tires is:

F tire = 6000 N – 1500 N

F tire = 4500 N

7 0
3 years ago
A rope is tied to a tree 4.5 feet from the ground and then run through a pulley hooked to a vehicle 33 feet from the tree. If a
Angelina_Jolie [31]

Answer:

The vehicle displacement is 9.90 feet.

Explanation:

Given that,

Height of tree = 4.5 feet

Distance = 33 feet

According to figure,

We need to calculate the value of l

Using Pythagorean theorem

l=\sqrt{(33)^2+(4.5)^2}

We need to calculate the vehicle displacement

Using horizontal component

Vehicle displacement =horizontal component of pulled rope

Vehicle\ displacement= d\cos\theta

Where, \theta is angle between rope and ground

d = pulled length of rope

Vehicle\ displacement=10\times\dfrac{33}{\sqrt{(33)^2+(4.5)^2}}

Vehicle\ displacement=9.90\ feet

Hence, The vehicle displacement is 9.90 feet.

3 0
2 years ago
The efficiency of a screw is low because of _____.
AfilCa [17]
The correct answer that would best complete the given statement above would be the second option. A screw is an inclined plane wrapped around a cylinder. <span>The efficiency of a screw is low because there is more input than output. In other words, it is because of friction. Hope this answer helps.</span>
6 0
2 years ago
Read 2 more answers
The LR5 is the specialist submarine for underwater rescue. The average density of seawater is 1028 kg/ m3.
sladkih [1.3K]

Answer:

P = 7196 [kPa]

Explanation:

We can solve this problem using the expression that defines the pressure depending on the height of water column.

P = dens*g*h

where:

dens = 1028 [kg/m^3]

g = 10 [m/s^2]

h = 700 [m]

Therefore:

P = 1028*10*700

P = 7196000 [Pa]

P = 7196 [kPa]

5 0
3 years ago
Other questions:
  • A 12-tooth gear is turned two times. How many times will the 24-tooth gear to which it is connected turn?
    12·1 answer
  • Question In picture PLEASE HELP NOW
    10·1 answer
  • Please help!!!!!!!!!
    12·1 answer
  • The rate at which speed changes is called
    10·2 answers
  • A wild pig attacks a hunter with a velocity of 5 m/s. At the instant when the pig is at a distance of 100 m the hunter shoots an
    14·1 answer
  • A scientist completely dissolves gaseous oxygen into a container of liquid water. Which of the following best describes the cont
    10·2 answers
  • What happens to the particles in a substance when temperature rises
    6·1 answer
  • What is the rate of acceleration of a 2,000 kilogram truck if a force of 4,200 N is used to make it start moving forward?
    14·2 answers
  • 3. What is the difference between the law of gravity and the theory of gravity?_________________________________________________
    15·1 answer
  • A 1,160 kg satellite orbits earth with a tangential speed of 7,446 m/s. if the satellite experiences a centripetal force of 8,95
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!