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
Dovator [93]
3 years ago
10

Which statement best describes the electric field?

Physics
1 answer:
OleMash [197]3 years ago
6 0

Answer:

D

Explanation:

You might be interested in
Two rods are identical, except that one is brass (Y = 9.0 × 1010 N/m2) and one is tungsten (Y = 3.6 × 1011 N/m2). A force causes
PIT_PIT [208]

To solve this problem it is necessary to apply the concepts related to Young's Module, and find the radius that gives the ratio between the two given materials. Young's module can be defined as,

Y=\frac{FL}{A \Delta L}

Where,

F= Force

L = Initial Length

A = Cross-sectional Area

\Delta L = Change in Length

Re-arrange the equation to find the change in Length we have,

\Delta L = \frac{FL}{AY}

If both the Force, as the Area and the initial length are considered constant, we can realize directly that the change in length is inversely proportional to Young's Module, therefore

\Delta L \propto \frac{1}{Y}

Applying this concept to that of the two materials (Brass and Tungsten),

\frac{\Delta L_T}{\Delta L_B} = \frac{Y_B}{Y_T}

\frac{\Delta L_T}{\Delta L_B} = \frac{9*10^{10}}{3.6*10^{11}}

\frac{\Delta L_T}{\Delta L_B} = 0.25

If the force caused 3 * 10^ {- 6}m to be stretched, the tungsten will stretch 0.25 of that ratio

L_T = 3*10^{-6}*0.25

L_T = 7.5*10^{-7}m

Therefore the amount of stretch of Tungsten is 7.5*10^{-7}m

8 0
3 years ago
Define fundamental and derived quantities with two example of each. ​
stich3 [128]

Fundamental quantity : quantities which are independent on other physical quantity .

ex: length,mass,time, current, amount of substance, luminous intensity, thermodynamic temperature,

Derived quantity : quantities which are depend on fundamental quantities.

ex: Area, volume, density, speed, acceleration, force, velocity etc.

4 0
2 years ago
Internal Forces are :
Ugo [173]






Hi Pupil Here's your answer ::






➡➡➡➡➡➡➡➡➡➡➡➡➡



They are always balanced forces since if they are applied on an object the resultant of tgese forces on the object is Zero

So, the option A is the correct. They are always balanced forces.
8 0
3 years ago
When Earth runs into the dust trail left behind by a comet that is orbiting the Sun, Earth experiences a _____.
tekilochka [14]
The answer to this question is: C) Meteor Shower
7 0
3 years ago
Read 2 more answers
What is the magnitude of electrical force of attraction between an copper nucleus (29 protons) and its innermost electron if the
Agata [3.3K]
The charge of the copper nucleus is 29 times the charge of one proton:
Q=29 q= 29 \cdot 1.6 \cdot 10^{-19}C=4.64 \cdot 10^{-18}C
the charge of the electron is
e=-1.6 \cdot 10^{-19}C
and their separation is
r=1.0 \cdot 10^{-12} m

The magnitude of the electrostatic force between them is given by:
F=k_e  \frac{Qe}{r^2}
where k_e is the Coulomb's constant. If we substitute the numbers, we find (we can ignore the negative sign of the electron charge, since we are interested only in the magnitude of the force)
F=(8.99 \cdot 10^9 Nm^2C^{-2}) \frac{(4.64 \cdot 10^{-18}C)(1.6 \cdot 10^{-19}C)}{(1.0 \cdot 10^{-12} m)^2}=6.68 \cdot 10^{-3} N
3 0
3 years ago
Other questions:
  • Reduce, reuse, recycle! Soft drinks come in aluminum cans that are readily recycled. Storage of empty cans is never a problem, s
    7·1 answer
  • A battery charges capacitor A until the potential difference between the two conductors of the capacitor is V.
    9·2 answers
  • The response of an object to the force of gravity is called
    5·1 answer
  • Which one of the following is a balanced equation?
    5·1 answer
  • All circular motions are usually periodic but all periodic motions are not circular why
    13·1 answer
  • Select the correct answer.
    8·1 answer
  • Drawing conclusions.
    13·2 answers
  • Light with an intensity of 1 kW/m2 falls normally on a surface with an area of 1 cm2 and is completely absorbed. The force of th
    7·1 answer
  • An oil tank has a base of area 2.5 m2 and is filled with oil to a depth of 1.2 m. The density of the
    15·1 answer
  • 7. A perfect cube has a width of 2 cm. What is the cube's volume? Show your work!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!