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
Nata [24]
3 years ago
8

What is the repulsive force between two pith balls that are 8.00 cm apart and have equal charges of −25.0 nc? g?

Physics
3 answers:
garri49 [273]3 years ago
8 0

Solution:

The force between two charges given by Columb's law ithe force between two charges given by Coloumb law is\\
\left | F \right |=\frac{kq_{1}q_{2}}{r^{2}}\\\\
where k is the constant equal to\\  \rn Now,\\
We have \\r=0.008mand q1=q2=-25.0\times10^{-9}\\
\left | F \right |=\left ( 8.099\times10^{9}\frac{Nm^{2}}{c^{2}} \right )\times\left ( \frac{25.0\times10^{-9}\times 25.0\times10^{-9}}{0.008^{2}} \right )\\
=1.21\times10^{-3}

Daniel [21]3 years ago
7 0

To calculate the force between two negative charges, we use the formula which is given by the Coulomb`s Law as

F=\frac{kq_{1}q_{2}  }{r^{2} }

Here, q_{1} andq_{2} are the charges on the pith balls, r is the separation between the charges and k is constant and its value is  8.99\times 10^9 N m^2/C^2.

Given  q_{1} =q_{2} =-25 nC=-25\times 10^{-9}C and  r=8 cm=8\times10^{-2} m.

Substituting these values in above formula we get,

F= 8.99\times 10^9 N m^2/C^2\frac{(-25\times 10^{-9}C)(-25\times 10^{-9}C)}{(8\times10^{-2} m)^2} \\\\\ F= 877929.7\times 10^{-9}  N\\\\F=8.8\times10^{-4}N

Thus, the repulsive force between two pith balls is 8.8\times10^{-4}N.

valina [46]3 years ago
7 0

Solution:

The force between two charges given by Columb's law ithe force between two charges given by Coloumb law is\\
\left | F \right |=\frac{kq_{1}q_{2}}{r^{2}}\\\\
where k is the constant equal to\\  \rn Now,\\
We have \\r=0.008mand q1=q2=-25.0\times10^{-9}\\
\left | F \right |=\left ( 8.099\times10^{9}\frac{Nm^{2}}{c^{2}} \right )\times\left ( \frac{25.0\times10^{-9}\times 25.0\times10^{-9}}{0.008^{2}} \right )\\
=1.21\times10^{-3}

You might be interested in
10m= (5.0) + (.5)(9.8)(5.0)
Norma-Jean [14]
M=2.45 because you multiply out the equation on the right and divide by 10
8 0
3 years ago
a shell fired from a cannon at 60 ° from horizontal strikes a target 20m high at a distance 80m. Calculate the initial velocity
stich3 [128]

consider the motion along the X-direction

X = horizontal displacement = 80 m

V_{ox} = initial velocity along the x-direction = v Cos60

t = time of travel

using the equation

X = V_{ox}   t

80 = (v Cos60) (t)

t = 160/v                                         eq-1


consider the motion in vertical direction :

Y = vertical displacement = 20 m

V_{oy}  = initial velocity in Y-direction = v Sin60

a = acceleration = - 9.8 m/s²

t = time of travel = 160/v

using the equation

Y = V_{oy}  t + (0.5) a t²

20 = (v Sin60) (160/v) + (0.5) (- 9.8) (160/v)²

v = 32.5 m/s

4 0
3 years ago
Why does a rolling sphere slows down?​
VLD [36.1K]

The sphere slow down due to friction force between the surface of the sphere and the surface on that the sphere is rolling . The friction force acting against the motion of the sphere. Thats why it is slowed down. In fact not only a sphere, anything can not slow down untill a force act against it's motion.

3 0
3 years ago
Read 2 more answers
Why are electromagnets used in metal scrap yards?
Andrej [43]
Because the electromagnets can pick up magnetic material and move it around, hope this helps
8 0
3 years ago
Read 2 more answers
A car travels 70 miles in 80 minutes. Which is its average speed per minute
Alexxx [7]
Average speed=total distance travelled/time
3 0
3 years ago
Read 2 more answers
Other questions:
  • Why are certain metalloids useful in today's technological equipment?
    6·1 answer
  • A small ranger vehicle has a soft, ragtop roof. When the car is at rest, the roof is flat. When the car is cruising at highway s
    15·1 answer
  • What is the unit for electric charge?<br> Kilogram<br> Newton<br> Electron<br> Coulomb
    8·2 answers
  • Determine the number of revolutions through which a typical automobile tire turns in 1 yr. Suppose the automobile travels 13500
    13·1 answer
  • if researchers hit a sheet of metal with a yellow light and nothing happens, what color should the try next?​
    9·1 answer
  • A ball has a weight of 49N. What is the mass of the ball
    15·1 answer
  • A group of students conduct an experiment with a block of wood sliding down an incline. They find that the final energy of the b
    5·1 answer
  • I’m a god, a planet, and I measure heat. What am I?
    14·1 answer
  • How Many displacement vectors shown in the figure above have horizontal components
    9·1 answer
  • You can take your heart rate using:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!