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
notsponge [240]
3 years ago
10

A charge of 0.20uC is 30cm from a point charge of 3.0uC in vacuum. what work is required to bring the 0.2uC charge 18cm closer t

o the 3.0uC charge?​
Physics
1 answer:
vlada-n [284]3 years ago
3 0

Answer:

The correct answer is "4.49\times 10^{10} \ joules".

Explanation:

According to the question,

The work will be:

⇒ Work=-\frac{kQq}{R}

              =-\frac{1}{4 \pi \varepsilon \times (18-30)\times 3\times 0.2}

              =-\frac{1}{4 \pi \varepsilon \times (-12)\times 3\times 0.2}

              =\frac{0.3978}{\varepsilon }

              =4.49\times 10^{10} \ joules

Thus the above is the correct answer.    

You might be interested in
What connects our muscles to our bones?
Elina [12.6K]

Answer:

Tendon connects our muscles to our bones.

Explanation:

A tendon (or sinew) is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension.

Tendons are similar to ligaments and fasciae; all three are made of collagen.

Ligaments join one bone to another bone; fasciae connect muscles to other muscles.

Tendons and muscles work together to move bones.

The tendon is the part of the muscle that connects directly to the bone.

5 0
3 years ago
A quantity of N2 occupies a volume of 1.4 L at 290 K and 1.0 atm. The gas expands to a volume of 3.3 L as the result of a change
lions [1.4K]

Answer:

\rho = 0.50 g/L

Explanation:

As we know that

PV = nRT

here we have

P = 1.0 atm

P = 1.013 \times 10^5 Pa

so we have

V = 1.4 \times 10^{-3} m^3

T = 290 K

now we have

(1.013 \times 10^5)(1.4 \times 10^{-3}) = n(8.31)(290)

n = 0.06

now the mass of gas is given as

m = n M

m = (0.06)(28)

m = 1.65 g

now density of gas when its volume is increased to 3.3 L

so we will have

\rho = \frac{m}{V}

\rho = \frac{1.65 g}{3.3 L}

\rho = 0.50 g/L

5 0
3 years ago
What do astronomers use to calculate the age of the universe
kykrilka [37]

The age of the oldest stars ,

Patterns of background radiation ,

How fast distant galaxies are moving away from us.

6 0
3 years ago
Read 2 more answers
Which of these is not measured in hertz? Select all that apply.
Wittaler [7]
A). period is time

b). amplitude can be almost anything that waves . . . length, voltage, pressure, current etc.
But not hertz.

c). frequency ... "oftenness ... reciprocal time. the only item on this list that CAN be measured in Hertz.

d). wavelength ... length units
4 0
3 years ago
Read 2 more answers
When an object speeds up, it has ___________ acceleration.
Fittoniya [83]

Explanation:

when an object speeds up,it has positive acceleration.

hope it helps....

5 0
3 years ago
Other questions:
  • 10 PTS!!!!<br> Why are there only two possible combinations of DNA base pairs?
    7·1 answer
  • Thus, an object with a momentum of 0 (does or does not have
    7·1 answer
  • A strand of 10 lights is plugged into an outlet. How can you determine if the lights are connected in series or paralle
    7·1 answer
  • Michael Faraday has a unit of electricity named after him. It is called the Mic and it measures the size of certain electrical c
    9·1 answer
  • Which of the following statements are true?
    14·1 answer
  • A thin cylindrical pressure vessel of 250 mm diameter and 5 mm thickness is rigidly attached at one end. Determine maximum shear
    9·1 answer
  • who is credited with popularizing the geocentric model of the solar system? brahe copernicus newton ptolemy
    7·2 answers
  • For a science experiment you need to electroplate zinc onto both sides of a very thin, 1.00 cm x 1.00 cm copper sheet. You want
    14·1 answer
  • Why does carpet produce static electricity more than hardwood floors?
    12·2 answers
  • A 70.0 cm long string is vibrating in such a manner that it forms a standing wave with three antinodes. (The string is fixed at
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!