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
madreJ [45]
3 years ago
6

What is the electric force acting between two charges of -0.0045 C and -0.0025 C that are 0.0060 m apart? Use Fe=kq1q2/r^2 and k

= 9.00 x 10^9 N*m^2/C^2
A. 1.7 x 10^7 N
B. -1.7 x 10^7 N
C. -2.8 x 10^9 N
D. 2.8 x 10^9 N
Physics
2 answers:
oksano4ka [1.4K]3 years ago
4 0

Answer:

D. 2.8 × 10⁹ N

Explanation:

The force between two charges is directly proportional to the amount of charges at the two points and inversely proportional to the square of distance between the two points.

Fe= k Q₁Q₂/r²

Q₁= -0.0045 C

Q₂= -0.0025 C

r= 0.0060 m

k= 9.00 × 10 ⁹ Nm²/C²

Fe= (9.00 × 10 ⁹ Nm²/C²×-0.0045 C×-0.0025 C)/0.0060²

=2.8 × 10⁹ N

ArbitrLikvidat [17]3 years ago
3 0

Answer:

Like the other person said, the answer is 2.8 x 10^9

Explanation:

You might be interested in
Please help with both questions thank you!
Katen [24]

I think is:

(4)Inner core

(4)different Kingdome different species

hope this help :)

3 0
3 years ago
John argues that energy is not conserved because when someone presses the brakes in a moving car, kinetic energy is lost. What s
babunello [35]
kinetic energy is converted into elastic potential energy stored in the brakes.
7 0
3 years ago
An important dimensionless parameter in certain types of fluid flow problems is the Froude number defined as V/√g.l where V is a
prohojiy [21]

Answer:

1.24611

Explanation:

V = Velocity = 10 ft/s

L = Length = 2 ft

g = Acceleration due to gravity = 32.2 ft/s²

Froude number is given by

Fr=\dfrac{V}{\sqrt{gL}}\\\Rightarrow Fr=\dfrac{10}{\sqrt{32.2\times 2}}\\\Rightarrow Fr=1.24611

Converting to SI units

10\ ft/s=10\times \dfrac{1}{3.281}

32.2\ ft/s^2=32.2\times \dfrac{1}{3.281}

2\ ft=2\times \dfrac{1}{3.281}

Fr=\dfrac{V}{\sqrt{gL}}\\\Rightarrow Fr=\dfrac{10\times \dfrac{1}{3.281}}{\sqrt{32.2\times \dfrac{1}{3.281}\times 2\times \dfrac{1}{3.281}}}\\\Rightarrow Fr=1.24611

The Froude number is 1.24611

The Froude number is equal. The Froude number is dimensionless as the units cancel each other. In order for this to happen the units used need to be consitent either imperial or SI.

7 0
3 years ago
In order to do work, the force vector must be
gregori [183]

As we know that total work done by a force is given by

W = F.d

W = Fdcos\theta

so it is product of force and displacement along same direction

as we can write it as

W = (Fcos\theta)(d)

so it must be the product of force and displacement in same directions so correct answer must be

<u>B. in the same direction as the displacement vector and the motion.</u>

6 0
3 years ago
Read 2 more answers
What does buoyancy depend on 
Marta_Voda [28]
... the density of the liquid
... the volume of the submerged object
8 0
4 years ago
Read 2 more answers
Other questions:
  • What force is necessary to accelerate a 70-kg object at a rate of 4.2 m/s2 ? Show your wo k below?
    6·1 answer
  • What biomes are found in southern africa?
    14·1 answer
  • How does the redshift of distant galaxies best support the big bang theory? It shows that the galaxies are becoming warmer. It s
    15·2 answers
  • Nuclear fusion occurs when a heavy element decays to a lighter one hydrogen nuclei divide a helium atom splits atomic nuclei joi
    8·1 answer
  • The three osicles known as the hammer, anvil and stirrup __________.
    11·1 answer
  • Describe how the rider exerts a force on the motorcycle
    12·1 answer
  • #1- How much Magnesium is consumed in this reaction? *input # only.
    11·1 answer
  • PLEASE HELP! URGENT<br><br> Explain how the forces need to change so an aeroplane can land
    13·1 answer
  • Please help!!!!!!!!!!
    10·1 answer
  • which part of the microscope will be used first to adjust the focus when starting with the lowest power lens?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!