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
castortr0y [4]
3 years ago
12

What is the magnitude of an electric field that balances the weight of a plastic sphere of mass 2.1 g that has been charged to -

3.0 nc ?
Physics
1 answer:
Liula [17]3 years ago
4 0

Answer:

Electric field, E=6.86\times 10^6\ N/C

Explanation:

It is given that,

Mass of sphere, m = 2.1 g = 0.0021 kg

Charge, q=-3\ nC=-3\times 10^{-9}\ C

We need to find the magnitude of electric field that balances the weight of a plastic spheres. So,

ma=qE

a = g

E=\dfrac{mg}{q}

E=\dfrac{0.0021\ kg\times 9.8\ m/s^2}{-3\times 10^{-9}\ C}

E=6860000\ N/C

or

E=6.86\times 10^6\ N/C

Hence, the magnitude of electric field that balances its weight is 6.86\times 10^6\ N/C. Hence, this is the required solution.

You might be interested in
Each level in a food chain contains less energy than the one below it because some energy is
Ira Lisetskai [31]

Answer:

Because some of the energy is dissipated in the metabolic activities such as digestion and maintaining the warmth of the body of the organism at each level.

Explanation:

Food chain is the sequential chain of energy transfer from one onrgaanism at a trophic level to another organism at the other trophic level. Autotrophs receive the energy from the sun and prepare their own food. Autotrophs then get consumed by the primary heterotrophs and further primary heterotrophs by the secondary heterotrophs. When the secondary heterotrophs die they are then consumed by the scavangers and decayed by the micro-organisms in to the soil which finally help the autotrophs (plants) in their growth.

At each trophic level of the food chain the energy does not gets completely transferred because the organisms also spend some energy in search of the food and the processing of food is also an energy consuming process.

The energy is also used in combating the climatic conditions and predators for the survival.

7 0
3 years ago
Essential Questions: What does the particle theory tell us about the nature of matter? How does
Ede4ka [16]

sowwie :( i need points

Explanation:

5 0
2 years ago
if the moon were somehow knocked out of orbit and flew off into outer space, what are the possible effects on the earth?
Anarel [89]
<h2>Answers:</h2>

<u>The possible effects on the earth will be</u><u> 1) No light during night 2) No tides</u>

<h2>Explanation:</h2>

As we know that tides are caused by the differential gravitational force on the equatorial regions by the moon. So if the Moon escapes from Earth, the main effect would be the lack of tides on Earth The region closer to the Moon experiences more gravitational force than the region on Earth away from the Moon. Other effects will be no more Moon to light up the night sky and no more solar eclipses.

5 0
3 years ago
Emma is running for the bus. She runs 100 metres in 25 seconds. Calculate her speed
Afina-wow [57]

Answer:

25km/h

is that the full question

8 0
3 years ago
Read 2 more answers
A spring with spring constant of 33 N/m is stretched 0.15 m from its equilibrium position. How much work must be done to stretch
Hoochie [10]

Work done is 0.442J

<u>Explanation:</u>

Given:

Spring constant, k = 33 N/m

Distance, x₁ = 0.15m

Additional distance, x₂ = 0.072 m

Total distance = 0.15 + 0.072 m

                        = 0.222 m

Work done, W = ?

We can calculate work done by the formula

W = \frac{1}{2}kx_2^2 - \frac{1}{2}kx_1^2

On substituting the value we get:

W = \frac{1}{2}k [(x_2)^2  - (x_1)^2]\\ \\W = \frac{1}{2} X 33[(0.222)^2 - (0.15)^2]\\ \\W = \frac{1}{2}X 33 [ 0.0493 - 0.0225]\\ \\W = 0.442 J

Therefore, work done is 0.442J

7 0
3 years ago
Other questions:
  • The chemical equation shown represents photosynthesis. Carbon dioxide plus A plus light with a right-pointing arrow towards B pl
    12·2 answers
  • Compare the geology of Callisto, Ganymede, and Titan.
    11·1 answer
  • A chart labeled table A : effect of height on temperature with initial temperature as 25 degrees Celsius, mass w is 1.0 kilogram
    7·2 answers
  • A 1300 kg car starts at rest and rolls down a hill from a height of 10.0 m. It then moves across a
    7·1 answer
  • In 1909 Robert Millikan was the first to find the charge of an electron in his now-famous oil drop experiment. In the experiment
    14·1 answer
  • The message refers to which of the following?
    5·1 answer
  • A _______ is a repeating disturbance or vibration that transfers or moves energy from place to place without transporting mass.
    15·2 answers
  • Will mark as brainlist for only correct answer
    7·1 answer
  • when a electric current is passed through an insulated wire that is coiled around an iron core like a nail what is created?
    14·1 answer
  • Please help me plsss!​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!