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
alukav5142 [94]
3 years ago
13

2.19 The drag characteristics of a blimp traveling at 4 m/s are to be studied by experiments in a water tunnel. The prototype is

20 m in diameter and 110 m long. The model is one-twentieth scale. What velocity must the model have for dynamic similarity
Physics
1 answer:
Naily [24]3 years ago
8 0

Answer:

Vm=0.894m/s

Explanation:

From the question we are told that

Velocity if travel v=4m/s

Diameter of  prototype d_1=20m and d_2=110m

Scale ratio=\frac{1}{20}

Generally Velocity of of the model using Froud's model is mathematically given as

Fm=Fp

\frac{Vm}{\sqrt{Lmg}} =\frac{Vp}{\sqrt{Lpg}}

Vm=Vp*\frac{Vp}{\sqrt{Lpg} }

Vm=4*\frac{1}{\sqrt{20}}

Vm=0.894m/s

You might be interested in
A charge q of 1.3 × 10-16 coulombs moves from point A to a lower potential at point B in an electric field of 3.2 × 102 newtons/
LUCKY_DIMON [66]

Explanation :

It is given that,

Charge, q=1.3\times 10^{-16}\ C

Electric field, E=3.2\times 10^2\ N/C

Distance, d=1.1\times 10^{-2}\ m

The work done is stored in the form of potential energy.

W=F.d

\because F=qE

So, W=qE\ d

W=1.3\times 10^{-16}\ C\times 3.2\times 10^2\ N/C\times 1.1\times 10^{-2}\ m

W=4.576\times 10^{-16}\ J

Hence, this is the required solution.

5 0
3 years ago
Read 2 more answers
A wheel, starting from rest, rotates with a constant angular acceleration of 1.80 rad/s^2. During a certain 7.00 s interval, it
lora16 [44]

Answer:

a) 1.3 rad/s

b) 0.722 s

Explanation:

Given

Initial velocity, ω = 0 rad/s

Angular acceleration of the wheel, α = 1.8 rad/s²

using equations of angular motion, we have

θ2 - θ1 = ω(0)[t2 - t1] + 1/2α(t2 - t1)²

where

θ2 - θ1 = 53.2 rad

t2 - t1 = 7s

substituting these in the equation, we have

θ2 - θ1 = ω(0)[t2 - t1] + 1/2α(t2 - t1)²

53.2 =ω(0) * 7 + 1/2 * 1.8 * 7²

53.2 = 7.ω(0) + 1/2 * 1.8 * 49

53.2 = 7.ω(0) + 44.1

7.ω(0) = 53.2 - 44.1

ω(0) = 9.1 / 7

ω(0) = 1.3 rad/s

Using another of the equations of angular motion, we have

ω(0) = ω(i) + α*t1

1.3 = 0 + 1.8 * t1

1.3 = 1.8 * t1

t1 = 1.3/1.8

t1 = 0.722 s

5 0
3 years ago
How much time does it take for a car to accelerate from 3.44 m/s to 20.9 m/s if the average acceleration is 6.00 m/s^3
miv72 [106K]

Do you go to GA Connexus Academy??

4 0
4 years ago
Read 2 more answers
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is
Xelga [282]

Answer:

7.3114*10^{-5}V

Explanation:

To give a solution to the exercise, it is necessary to consider the concepts related to magnetic flux and Faraday's law of induction. Faraday's law states that the voltage induced in a closed circuit is directly proportional to the speed with which the magnetic flux that crosses any surface with the circuit as an edge changes over time.

It is represented under the equation,

\epsilon = N \frac{\Delta\Phi}{\Delta t}

Where,

\epsilonis the induced electromotive force

N = Number of loops

\Delta t= Time

\Delta\Phi= Magnetic Flux

For definition the change in magnetic flux is:

\Delta \Phi = \Delta B A cos\phi

Where,

B= Magnetic field

Substituting at the first equation we have

\epsilon = N \frac{\Delta B A Cos\phi}{\Delta t}

\epsilon = N \frac{(B_2-B_1) (\pi r^2) Cos\phi}{\Delta t}

Our values are given by,

N = 1 turn

B_2 = 1T

B_1 = 0T

r = 1.6mm

\phi = 0\°

\Delta t = 100ms

Replacing,

\epsilon = (1) \frac{(1-0) (\pi (1.6*10^{-3})^2) Cos(0)}{110*10^{-3}}

\epsilon = 7.311*10^{-5}V

<em>Therefore the magnitud of the induced emf around a horizontal circle of tissue is 7.3114*10^{-5}V</em>

8 0
4 years ago
A car is traveling at 96km/hr. what is the acceleration of a car traveling a distance of 100m and come to rest?​
8090 [49]

Answer:

Explanation:

v² = u² + 2as

v = 0

u = 96 / 3.6 = 26.7 m/s

0² = 26.7² + 2a100

a = -3.5555555... ≈ -3.6 m/s²

the negative sign indicated the acceleration vector opposes the (assumed positive) initial velocity vector direction.

6 0
3 years ago
Other questions:
  • Define power and discuss how to determine it.
    8·1 answer
  • A plane starting from rest accelerates to 40 m/s in 10 s. How far did the plane travel during this time?
    6·1 answer
  • A small water pump is used in an irrigation system. The pump takes water in from a river at 10oC, 100 kPa at a rate of 5 kg/s. T
    11·1 answer
  • You did 150 joules of work lifting a 120-newton backpack.
    14·1 answer
  • Is there any change in the pressure of container filled with water when the volumed is increased
    6·1 answer
  • Can someone help check question 2 I don’t think part 2 is right?!
    15·1 answer
  • A girl of mass 50.0 kg sits on the right-hand side of a seesaw at a distance of 3.4 m
    10·1 answer
  • An object swings in a horizontal circle, supported by a 1.8-m string. It swings at a speed of 3 m/s. What is the mass of the obj
    14·1 answer
  • List in order of imcreasing​
    14·1 answer
  • A Van de Graaff generator produces a beam of 2.00-MeV deuterons, which are heavy hydrogen nuclei containing a proton and a neutr
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!