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Sloan [31]
4 years ago
15

Suppose we have two negative charges, one located at the origin and carrying charge −9e, and the other located on the positive x

-axis at a distance d from the first one and carrying charge −36e. Determine the location, polarity and magnitude of a third charge whose placement would bring the entire system into equilibrium.
Engineering
1 answer:
Elanso [62]4 years ago
7 0

Answer:

It would have to be in between the two charges and be positive for force on 9e to be zero

k 9e q/x^2= k 36e 9e /d^2

q/x^2 = 36e/d^2

q = 36e x^2/d^2

Now we need force on 36e to be zero

k 36e q/(d-x)^2 = k 36e 9e/d^2

q/(d-x)^2 = 9e/d^2

36 x^2/d^2 = 9/d^2 (d-x)^2

36 x^2 = 9 (d-x)^2

x=d/3

q = 36e (d/3)^2/d^2 = 36e/3^2 = 4 e

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4 0
3 years ago
"Water is flowing in a metal pipe. The pipe OD (outside diameter) is 61 cm. The pipe length is 120 m. The pipe wall thickness is
Katarina [22]

Answer:

Total wight =640.7927 KN

Explanation:

Given that

do= 61 cm

L =120

t= 0.9 cm

That is why inner diameter of the pipe

di= 61 - 2 x 0.9 cm

di=59.2 cm

Water density ,ρ = 1 kg/L = 1000 kg/m³

Weight of the pipe ,wt = 2500 N/m

wt = 2500 x 120 N = 300,000 N

The wight of the water

wt ' = ρ V g

wt'=1000\times \dfrac{\pi}{4}\times (0.61^2-0.0592^2)\times 9.81\times 120 N

wt'=340792.47 N

That is why total wight

Total wight = wt + wt'

Total wight =300,000+ 340792.47 N

Total wight =640,792.47 N

Total wight =640.7927 KN

7 0
4 years ago
4. Which of the following are used for vehicle and/or major component identification?
AleksAgata [21]

Option C

VIN (vehicle identification number) are used for vehicle and/or major component identification

<h3><u>Explanation:</u></h3>

American automobile producers have practiced a vehicle identification number (V.I.N.) to name and recognize motor vehicles. They serve to retain an indication of obstacles, ownership exchanges, and prevent crime. This practice also posted the superimposed major component parts and replacement parts to be noted for each of the classes of vehicles.

Depending on the transport major parts may be marked with the vehicle’s VIN. The component part labels are composed of the alike material as the Federal Safety Certification Labels and are also planned to self destruct if excluded.

4 0
4 years ago
4. Which of the following is not part of a rear air-conditioning system?
Amanda [17]

Answer:

C. Rear AC compressor

Explanation:

Rear Ac compressor is not part of a rear air-conditioning system

4 0
3 years ago
You will write a program estimate that uses a training data set to learn weights for a set of house attributes, and then applies
gizmo_the_mogwai [7]

Answer:

I can share a link to answer since the code is to long to be contained here. the code is on github

https://github.com/arafatm/edu_coursera_machine_learning_1_foundations/blob/master/code/02.01.predicting.house.prices.ipynb

5 0
3 years ago
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