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
Harlamova29_29 [7]
3 years ago
15

Which, if any, of the following statements about electric field lines is/are true? A.The electric field is always perpendicular

to the surface outside of a conductor.
B.If an electron were placed on an electric field line, it would move in a direction perpendicular to the field.
C. Electric field lines originate on positive charge and terminate on negative charge.
D.It is possible for two electric field lines to cross each other.
E.If an electron and a positron were in the presence of a very strong electric field, they would move away from each other.
F.It is not possible for the electric field to ever be zero.
G.If a proton were placed on an electric field line, it would move in a direction anti-parallel to the field.
Physics
1 answer:
jonny [76]3 years ago
8 0
The electric field is always perpendicular to the surface outside of a conductor. TRUE

<span> If an electron were placed on an electric field line, it would move in a direction perpendicular to the field. FALSE, it would move in an anti-parallel direction because its charge is negative </span>
 
<span>Electric field lines originate on positive charge and terminate on negative charge. TRUE ; but they can also go to infinity </span>
 
It is possible for two electric field lines to cross each other.
<span> Usually FALSE; though technically possible at special points where field is zero. </span>
 
If an electron and a positron were in the presence of a very strong electric field, they would move away from each other.
<span> TRUE; one is positive, and one is negative. If the field is strong enough, the action of the field will overcome the mutual attraction between them </span>
 
It is not possible for the electric field to ever be zero. FALSE: it IS possible, inside a conductor for instance
   
If a proton were placed on an electric field line, it would move in a direction anti-parallel to the field.
<span> FALSE: being positive, it would move in the SAME direction as the field</span>ic 
You might be interested in
A sample of helium behaves as an ideal gas as energy is
alisha [4.7K]

Answer:

0.0321 g

Explanation:

Let helium specific heat c_h = 5.193 J/g K

Assuming no energy is lost in the process, by the law of energy conservation we can state that the 20J work done is from the heat transfer to heat it up from 273K to 393K, which is a difference of ΔT = 393 - 273 = 120 K. We have the following heat transfer equation:

E_h = m_hc_h \Delta T = 20 J

where m_h is the mass of helium, which we are looking for:

m_h = \frac{20}{c_h \Delta T} = \frac{20}{5.193 * 120} \approx 0.0321 g

4 0
3 years ago
This is the simplest type of fold where the rock bends like this:
Natasha_Volkova [10]

The answer is Monocline. And I checked it, it's correct.

6 0
2 years ago
Read 2 more answers
1. Was your hypothesis correct? Why or why not?
marusya05 [52]

Answer:

1. Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been encountered, where it is not true.

2.Mass is the amount of matter in a body, normally measured in grams or kilograms etc. Weight is a force that pulls on a mass and is measured in Newtons. So on Earth, Weight would be your (mass x acceleration( 9.8 ) . Density, there are lots of kinds of density I guess, but the one you are talking about is density = mass / volume. Density basically means how much mass is occupied in a specific volume or space. Different materials of the same size may have different masses because of its density. Density in this case is measured in kg / m^3 or kg / L or g / m^3 etc where the numerator is a unit of mass and the denominator a unit of volume.

3.The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than the liquid it is placed in. An object will sink if it is more dense than the liquid it is placed in.

4.  An object will float if the gravitational (downward) force is less than the buoyancy (upward) force. So, in other words, an object will float if it weighs less than the amount of water it displaces. This explains why a rock will sink while a huge boat will float.

5.

3 0
2 years ago
A 2.0-kg block is on a perfectly smooth ramp that makes an angle of 30° with the horizontal. (a) What is the block’s acceleratio
lukranit [14]

Answer:

The forces that do non-zero work on the block are gravity and normal reaction force

Explanation:

5 0
3 years ago
What is the function of the phytoplankton in ocean ecosystems?
vesna_86 [32]
Ok ok! It's A. Producer
5 0
3 years ago
Other questions:
  • Get the lead out! That is really graphite in your pencil, not lead. Graphite is a form of carbon. Use the physical properties of
    8·2 answers
  • A book is sliding across a horizontal desk and comes to a stop. the books kinetic energy was converted into what type of energy
    7·1 answer
  • A student submerges an irregularly object in a graduated cylinder half filled with water. The level of the water in the cylinder
    15·1 answer
  • A 1.2-kg mass suspended from a spring of spring constant 22 N.m-1 executes simple harmonic motion of amplitude 5 cm. What is the
    15·1 answer
  • Stars only emit light within the visible spectrum of the electromagnetic spectrum.
    14·1 answer
  • The weight of a body kept at a distance of 6400 km from the centre of the
    12·1 answer
  • What activity level should participants be in when exercising in their target heart rate zone
    9·1 answer
  • •A radioactive material A (decay constant λA) decays into a material B (decay constant λB) and then into material C (decay const
    10·1 answer
  • Use the drop-down menus to complete the statement.
    14·2 answers
  • Which of the following is an example of frontier research?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!