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
oksian1 [2.3K]
3 years ago
10

An equation for the frictional pressure loss Δ p (inches H2O) in a circular duct of inside diameter d (in.) and length L (ft) fo

r air flowing with velocity V (ft/min) is Δp = 0.027( L d 1.22)(V V0)1.82,where V0 is a reference velocity equal to 1000 ft/min. Find the units of the "constant" 0.027.
Physics
1 answer:
WITCHER [35]3 years ago
5 0

Answer:

The units of the constant "0.027" is inchH₂O·inch^(1.22)/fit

Explanation:

The constant has to be consistent with all the other units of this equation:

\Delta P [InH_2O]=\displaystyle 0.027[x]\frac{L[ft]}{(d[in])^{1.22}}(\frac{v[ft/min]}{v_0[ft/min]})^{1.82}

Therefore:

[InH_2O]=\displaystyle [x]\frac{[ft]}{([in])^{1.22}}(\frac{[ft/min]}{[ft/min]})^{1.82} \leftrightarrow [x]=\frac{[InH_2O][in]^{1.22}}{[ft]}

You might be interested in
How is the number 15,000 written in scientific notation?
morpeh [17]

Answer:

Correct answer: D.  1.5 · 10⁴

Explanation:

Extremely large or extremely small numbers are written in the form

r · 10ⁿ

where r is a one-digit number in decimal notation and has values from 1 to 9

and n has values ±1, ±2, ±3 .........

God is with you!!!

6 0
3 years ago
Match the correct center and scale factor to each figure.
34kurt

Answer:

Image

Explanation:

I looked at the graph and assumed answers

5 0
3 years ago
An empty rubber balloon has a mass of 12.5 g. The balloon is filled with helium at a density of 0.181 kg/m3. At this density the
Eduardwww [97]

Answer: 1.14 N

Explanation :

As any body submerged in a fluid, it receives an upward force equal to the weight of the fluid removed by the body, which can be expressed as follows:

Fb = δair . Vb . g = 1.29 kg/m3 . 4/3 π (0.294)3  m3. 9.8 m/s2

Fb = 1.34 N

In the downward direction, we have 2 external forces acting upon the balloon: gravity and the tension in the line, which sum must be equal to the buoyant force, as the balloon is at rest.

We can get the gravity force as follows:

Fg = (mb +mhe) g  

The mass of helium can be calculated as the product of the density of the helium times the volume of the balloon (assumed to be a perfect sphere), as follows:

MHe = δHe . 4/3 π (0.294)3 m3 = 0.019 kg

Fg = (0.012 kg + 0.019 kg) . 9.8 m/s2 = 0.2 N

Equating both sides of Newton´s 2nd Law in the vertical direction:

T + Fg = Fb

T = Fb – Fg = 1.34 N – 0.2 N = 1.14 N

6 0
3 years ago
A pendulum has 294 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom o
baherus [9]

Newton's law of conservation states that energy of an isolated system remains a constant. It can neither be created nor destroyed but can be transformed from one form to the other.


Implying the above law of conservation of energy in the case of pendulum we can conclude that at the bottom of the swing the entire potential energy gets converted to kinetic energy. Also the potential energy is zero at this point.


Mathematically also potential energy is represented as


Potential energy= mgh


Where m is the mass of the pendulum.


g is the acceleration due to gravity


h is the height from the bottom z the ground.


At the bottom of the swing,the height is zero, hence the potential energy is also zero.


The kinetic energy is represented mathematically as


Kinetic energy= 1/2 mv^2


Where m is the mass of the pendulum


v is the velocity of the pendulum


At the bottom the pendulum has the maximum velocity. Hence the kinetic energy is maximum at the bottom.


Energy can neither be created e destroyed. It can only be transferred from one form to another. Implying this law and the above explainations we conclude that at the bottom of the pendulum,the potential energy=0 and the kinetic energy=294J as the entire potential energy is converted to kinetic energy at the bottom.



6 0
3 years ago
How do I solve for this?
vova2212 [387]
I can’t see anything
7 0
2 years ago
Other questions:
  • A mass is attached to the end of a spring and set into simple harmonic motion with an amplitude A on a horizontal frictionless s
    8·1 answer
  • 53. A recently discovered planet has a mass four times as great as Earth's and a radius twice as large as Earth's. What will be
    5·1 answer
  • The nucleus of an atom consists of neutrons and electrons. tf
    7·2 answers
  • The electric potential inside a charged spherical conductor of radius R is is given by V = keQ/R, and the potential outside is g
    11·1 answer
  • Two containers hold an ideal gas at the same temperature and pressure. Both containers hold the same type of gas, but container
    9·1 answer
  • 0.30 s after seeing a puff of smoke rise from the starter pistol the sound of the firing of the pistol is heard by the track tim
    10·1 answer
  • Does the mass change how a bouncy ball bounce
    12·1 answer
  • GIVING BRAINLIEST PLEASE HELP!!
    6·1 answer
  • Approximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour?​
    10·1 answer
  • What does increasing the impulse on an object due to its momentum?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!