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
11111nata11111 [884]
3 years ago
8

7) A force of 500N exists between two identical point charges separated by a dis-

Physics
2 answers:
navik [9.2K]3 years ago
8 0

Answer:

q=9.43×10^-5C

Explanation:

F=kq^2/r^2

500= 9×10^9 × q^2/ (0.4)^2

500N×0.16m=9×10^9Nm^2C^2 × q^2

80/(9×10^9)= q^2

√(8.8889×10^9) = q

q= 9.43×10^-5C

since they are identical both charges, q=9.43×10^-5C

ioda3 years ago
5 0

Explanation:

f=500N

d=40cm=0.4m

=

\sqrt{500 \times 500 + .4 \times .4}

You might be interested in
Calculate the Reynolds number for a person swimming through maple syrup. The density of syrup is about 1400 kg/m^3 and the visco
Tema [17]

Answer:

The Reynolds number is 5600.

Explanation:

Given that,

Density = 1400 kg/m³

Viscosity = 0.5 Pa's

Length = 2 m

Speed = 1 m/s

We need to calculate the Reynolds number

Using formula of Reynolds number

R_{e}=\dfrac{\rho V\times L}{\mu}

Where, \rho = density of fluid

v = speed of syrup

l = length of a person

\mu=Viscosity

Put the all value into the formula

R_{e}=\dfrac{1400\times1\times2}{0.5}

R_{e}=5600

Hence, The Reynolds number is 5600.

5 0
3 years ago
HELP FAST!!!!!!!
Alex17521 [72]

<u>Answer</u>

A. Metals A and metals B



<u>Explanation</u>

Heat transfer takes place whenever there is temperature difference. When two bodies of different temperatures are brought together, heat energy will move from one body to the other until equilibrium temperature is reached.

In our case, heat transfer will take place in all four metals.

Metal A will transfer heat to the water since it's temperature is higher than that of water.

Metal B will also transfer heat to the water since it's temperature is higher than that of water.

Metal C will get heat from the water since it's colder than the water.

Metal D will also get heat from the water since it is colder than water.

7 0
3 years ago
Read 2 more answers
How to do this question?​
Zigmanuir [339]

Answer:

First.

  • Find double diffrenciation of all equation
  • Then put the value of t in the differenciated equations
3 0
3 years ago
What are the 2 types of ions.
Alina [70]

Answer:

Anions have more electrons than protons and so have a net negative charge. Cations have more protons than electrons and so have a net positive charge. Zwitterions are neutral and have both positive and negative charges at different locations throughout the molecule.

Explanation:

4 0
3 years ago
A car is traveling at 24.0 m/s when the driver suddenly applies the brakes, causing the car to slow down with constant accelerat
Elan Coil [88]

Answer:

The answer to your question is : vf = 15.18 m/s

Explanation:

Data

vo = 24 m/s

d = 120 m

vf = ? when d = 60.0 m

Formula

              vf² = vo²  + 2ad

For d =100m

            a = (vf² - vo²) / 2d

            a = (0 -24²) / 2(100)

            a = -576/200

             a = 2.88 m/s²

Now, when d = 60

        vf² = (24)² - 2(2.88)(60)

        vf² = 576 - 345.6

        vf² = 230.4

        vf = 15.18 m/s

4 0
3 years ago
Read 2 more answers
Other questions:
  • What happens when water vapor condenses into dew in terms of energy
    6·2 answers
  • If a girl is running along a straight road with a uniform velocity 1.5m/s find her acceleration.
    9·1 answer
  • An object is in uniform circular motion, tracing an angel at 30 degrees every 0.010 seconds. What's the period of this motion an
    12·1 answer
  • Suppose you want a telescope that would allow you to see distinguishing features as small as 3.5 km on the Moon some 384,000 km
    11·1 answer
  • Ohm’s Law<br>pls answer this photos​
    13·1 answer
  • Please help me fast and i brainliest!! Two balls are released from the same height. Ball A is released on the surface of Earth,
    7·1 answer
  • A race starts and finishes a race that is 50,000m. (30miles). The time is 23 minutes. The final velocity is 67m/s. What is the a
    13·1 answer
  • When I drop a bouncy ball it bounces back up to me. What force causes it to bounce?
    13·2 answers
  • Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problem
    6·2 answers
  • Given a force of 100 N and an acceleration of 5 m/s2, what is the mass
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!