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
ohaa [14]
3 years ago
5

Two point charges 3q and −8q (with q > 0) are at x = 0 and x = L, respectively, and free to move. A third charge is placed so

that the entire three-charge system is in static equilibrium. What are the magnitude, sign, and x − coordinate of the third
Physics
1 answer:
riadik2000 [5.3K]3 years ago
3 0

Answer:

Explanation:

The unknown charge can not remain in between the charge given because force on the middle charge will act in the same direction due to both the remaining charges.

So the unknown charge is somewhere on negative side of x axis . Its charge will be negative . Let it be - Q and let it be at distance - x on x axis.

force on it due to rest of the charges will be equal and opposite so

k3q Q / x² =k 8q Q / (L+x)²

8x² = 3 (L+x)²

2√2 x = √3 (L+x)

2√2 x - √3 x = √3 L

x(2√2 - √3 ) = √3 L

x = √3 L / (2√2 - √3 )

Let us consider the balancing force on 3q

force on it due to -Q and -8q will be equal

kQ . 3q / x² = k3q  8q / L²

Q = 8q  (x² / L²)

so charge required = - 8q  (x² / L²)

and its distance from x on negative x side = √3 L / (2√2 - √3 )

You might be interested in
How many elements occur naturally?<br> A. 2<br> B. 9<br> C. 29<br> D. 92
iragen [17]
92 elements occur naturally.

Hope this help‼️
7 0
3 years ago
Read 2 more answers
A car with a mass of 650 kg is moving with a speed of 20m/s. Calculate the kinetic energy of the car?
tatuchka [14]
KE=1/2MV2
So 1/2(650)(20)squared
1/2(650)(400)
200(650)
130,000 J
8 0
3 years ago
PLEASE HELP!!!!
Zina [86]
D is the answer
Imagine the magnetic field, it emanates from both

4 0
3 years ago
If you have a 1.0 m aqueous solution of NaCl, by how much will it increase the water’s boiling point, if KB = 0.512 °C/m? In oth
fgiga [73]

<u>Answer:</u> The elevation in boiling point is 1.024°C.

<u>Explanation:</u>

To calculate the elevation in boiling point, we use the equation:

\Delta T_b=ik_b\times m

where,

i = Van't Hoff factor = 2 (for NaCl)

\Delta T_b = change in boiling point  = ?

k_b = boiling point constant = 0.512^oC/m

m = molality = 1.0 m

Putting values in above equation, we get:

\Delta Tb=2\times 0.512^oC/m\times 1.0m\\\\\Delta Tb=1.024^oC

Hence, the elevation in boiling point is 1.024°C.

5 0
3 years ago
if a stone is projected at an angle of 50 degrees to the horizontal with an initial velocity of 50m/s, what is the vertical comp
Vilka [71]

Answer:

38.3 m/s

Explanation:

To find vertical component of initial velocity, you'd have to use sine ratio:

\displaystyle{\sin \theta = \dfrac{u_y}{u}}

\displaystyle{u_y} is vertical component of initial velocity and \displaystyle{u} is initial velocity given which is 50 m/s.

A stone is projected at an angle of 50 degrees so \displaystyle{\theta} = 50°. Substitute in the formula:

\displaystyle{\sin 50^{\circ} = \dfrac{u_y}{50}}\\\\\displaystyle{50 \sin 50^{\circ} = u_y}\\\\\displaystyle{u_y = 38.3 \ \, \sf{m/s}}

Therefore, the vertical component of initial velocity is approximately 38.3 m/s

(The picture is also attached for visual reference!)

3 0
2 years ago
Other questions:
  • How can operators avoid damaging Submersed Aquatic Vegetation (SAV) beds that are usually found in shallow areas of water?
    15·1 answer
  • A researcher studying the nutritional value of a new candy places a 4.10-gram sample of the candy inside a bomb calorimeter and
    7·1 answer
  • Force equals blank times acceleration
    12·2 answers
  • What is the net force acting on a 15kg sled that accelerates at 5 m/s/s *
    15·1 answer
  • How will the electrostatic force between two electric charges change if one charge is doubled and the second charge is tripled?
    13·1 answer
  • 100 POINTS
    12·1 answer
  • A baseball on the Moon and an identical baseball on the Earth are thrown vertically upward with the same initial velocity of 12
    11·1 answer
  • Use the following formula to answer the following statement. Round to the nearest tenth.
    15·1 answer
  • You are at a rest stop 250 miles north of New York City. You then travel north at a constant velocity of 65 miles per hour for 2
    12·1 answer
  • Two resistors are connected in parallel two equivalent resistance is 3,75 ohm if one resistor has a resistance of 10ohm what is
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!