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
DiKsa [7]
3 years ago
12

The force of attraction that a -40.0 μC point charge exerts on a +108 μC point charge has magnitude 4.00 N. How far apart are th

ese two charges? (k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2)
Physics
1 answer:
Karolina [17]3 years ago
8 0

Answer:

F = k q1 q2 / r^2

r^2 = k q1 q2 / F  = 9E9 * 4E-5 * 10.8E-5 / 4

r^2 = 9 * 4 * 10.8 / 4 * E-1 = 9.72 m^2

r = 3.12 m

You might be interested in
If an object is rolling without slipping, how does its linear speed compare to its rotational speed? If an object is rolling wit
salantis [7]

Answer:

v = r\omega

Explanation:

If the object is rolling without slipping, every unit of rotated angle equals to a distance perimeter rotated.

Suppose the object complete 1 revolution within time t. The angular distance is 2π rad. Its angular velocity is 2π/t

The distance it covered is its circumference, which is 2πr, and so the speed is 2πr/t

So the linear speed compared to angular speed is

\frac{v}{\omega} = \frac{2\pi r/t}{2\pi /t} = r

v = r\omega

6 0
3 years ago
Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above
tangare [24]

Answer:

5.1 hours

Explanation:

The only fact we need to know about such a question is that when gazing down at the north pole, the earth spins longitudinally at 360 degrees / day in the clockwise direction.

The planet would have to spin an additional 77 ° to strike the asteroid at 25° E. If the earth rotates in 24 hours 360 degrees, then it must it rotates in 5.1 h at 77 degrees.

8 0
3 years ago
A student observes that it is hard to hear music underwater in a pool. They state that the sound is always muffled. They
s344n2d4d5 [400]

Answer:

FALSE      

Explanation:

The answer is false.

The speed of the sound in water is  faster when compared to the speed of sound in air. This is because, the particles in air is loosely packed and are far from each other as compared to water or liquid.

The water particles are close to each other than air particles, so water particles are able to transmit the vibrations of the sound faster than the air particles.

Therefore sound waves travels faster in water than in air.

5 0
3 years ago
What is tan -1 (0.52)?
leva [86]

Answer:

-0.80985201682

Explanation:

Couldn't you have used Google???

7 0
3 years ago
FIRST ANSWER GETS BRAINLIST!!! Which step is part of a scientific investigation?
Luden [163]
Communicating the findings is part of a scientific investigation! The last option
7 0
3 years ago
Other questions:
  • Can anyone help me with B.?
    10·1 answer
  • What does friction oppose
    7·1 answer
  • Are the correct? PLEASE HELP ASAP
    10·2 answers
  • If a lamp in your house starts flickering, and you notice that the cord has a frayed wire, then the lamp has probably developed
    8·1 answer
  • What frequency is received by a person watching an oncoming ambulance moving at 110 km/h and emitting a steady 800-Hz sound from
    15·1 answer
  • What will Al’s charge be when it comes an ion
    10·1 answer
  • Which statement best describes the process that takes place in these nodules?
    14·2 answers
  • What would happen if you put a material between each marble? Newton's Cradle
    7·1 answer
  • Infer why the doppler effect can or can not occur in all waves.
    7·1 answer
  • When a ball bounces back when you throw it at a wall, what occurs?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!