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
goldfiish [28.3K]
3 years ago
6

A large sheet of charge has a uniform charge density of 9  μCm2. What is the electric field due to this charge at a point just

above the surface of the sheet?
Physics
1 answer:
Alex73 [517]3 years ago
7 0

Answer:

Explanation:

Surface charge density, σ = 9 μC/m² = 9 x 10^-6 C/m²

According to the Gauss theorem,

Electric field due to the sheet is given by

E = \frac {\sigma }{2\epsilon _{0}}

E = \frac{9\times 10^{-6}}{2\times 8.854\times 10^{-12}}

E = 5.08 x 10^5 N/C

You might be interested in
The spinning of earth on its axis causes the apparent rising and setting of the
rodikova [14]
Sun, moon, and some stars
4 0
3 years ago
Read 2 more answers
Two forces whose resultant is 100newton are perpendicular to each other. If one of them makes an angle of 60newton with the resu
Elis [28]

Answer:

100 N

Explanation:

Given that,

Two forces whose resultant is 100newton are perpendicular to each other.

If one of them makes an angle of 60newton with the resultant.

F_1=100\times \sin60=86.60\ N

and

F_2=100\times \cos60=50\ N

The magnitude of force,

F=\sqrt{F_1^2+F_2^2} \\\\F=\sqrt{86.6^2+50^2} \\\\F=99.99\ N

or

F = 100 N

So, the magnitude of force is 100 N.

6 0
3 years ago
The energy (such as light and heat) released by the Sun is produced by nuclear reactions in the core of the Sun, which convert h
Yanka [14]

Answer:

<em>the mass of one helium nucleus should be</em> <em>less than the mass of four hydrogen nuclei.</em>

Explanation:

Deep inside the core of the Sun, enough protons can collide into each other with enough speed that they stick together to form a helium nucleus and generate a tremendous amount of energy at the same time. This process is called nuclear fusion.

The mass-to-energy conversion is described by Einstein's famous equation:

E = mc2, or, in words, energy equals mass times the square of the velocity of light. Because the velocity of light is a very large number, this equation says that lots of energy can be gained from using up a modest amount of mass.

Photons In the proton-proton chain reaction, hydrogen nuclei are converted to helium nuclei through a number of intermediates. The reactions produce high-energy photons (gamma rays) that move through the "radiative layer" surrounding the core. This layer takes up 60 percent of the radius of the Sun. It takes a million years for energy to get through this layer into the "convective layer", because the photons are constantly intercepted, absorbed and re-emitted. In the core, the helium nuclei make up 62% of the mass (the rest is still hydrogen). The radiative and convective layers have about 72% hydrogen, 26% helium, and 2% heavier elements (by mass). The energy produced by fusion is then transported to the solar surface and emitted as light or ejected as high-energy particles.

3 0
3 years ago
Help ASAP! Giving brainliest!!!
PilotLPTM [1.2K]
<h3><u>Answer and explanation;</u></h3>

Reflection;

  • Bounces back from an opaque material
  • Bounces back from the boundary of two mediums
  • Seen in mirrors

Refraction;

  • Passes through a prism  
  • Moves from one medium to another  
  • Seen in lenses

Reflection refers to the bouncing of waves such as light waves. It involves a change in direction of waves when they bounce off a barrier.

Refraction is the bending of waves when they move from one medium to another. It involves a change in the direction of waves as they pass from one medium to another.

8 0
3 years ago
Read 2 more answers
Chang wants to build a circuit that will light up the bulb from a flashlight. Which component could Chang leave out and still li
Elan Coil [88]
The component that could Chang leave out and still light up the bulb is the switch.
4 0
2 years ago
Read 2 more answers
Other questions:
  • You place three nonflammable objects in a fire. They are identical in shape and size, but one object is black, the second is whi
    9·1 answer
  • A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. (a) find its original speed. (b) find
    15·2 answers
  • A circular loop of wire is positioned so the normal to its area points vertically upward. A bar magnet is dropped from above the
    14·1 answer
  • If a battery-operated car has a resistance of 3 Ohms and the current moving through it is 2 amps, what is the voltage of the bat
    14·2 answers
  • A motorcycle starts at rest and accelerates at a rate of 3 meters per second squared (m/s2) over a time period of 5 seconds (s).
    15·1 answer
  • What does the narrator mean when he says that energy is “as old as time itsself “
    10·1 answer
  • PLEASE HELP ME!!<br> Use Element and Pure Substance in the same sentence.
    11·1 answer
  • If we throw a tennis ball and a bowling ball, would the bowling ball require more or less force than the tennis ball to reach th
    9·1 answer
  • Write the importance of international bureau of weight and measures in the country​
    8·1 answer
  • Which of the following is true of ligand gated sodium ion channels neurons?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!