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
nignag [31]
3 years ago
10

When an object's temperature _______, it contracts.

Physics
1 answer:
NikAS [45]3 years ago
8 0
Answer is- decreases
You might be interested in
What type of friction prevents a pile of rocks from falling apart?
BlackZzzverrR [31]
A because it some type of friction
6 0
3 years ago
Two protons are maintained at a separation of nm. Calculate the electric potential due to the two particles at the midpoint betw
Liono4ka [1.6K]

Answer:

The electric potential is approximately 5.8 V

The resulting direction of the electric field will lie on the line that joins the charges but since it is calculated in the midpoint and the charges are the same we can directly say that its magnitude is zero

Explanation:

The two protons can be considered as point charges. Therefore, the electric potential is given by the point charge potential:

\displaystyle{U=\frac{q}{4\pi \epsilon_0r}} (1)

where q is the charge of the particle, \epsilon_0 the electric permittivity of the vacuum (I assuming the two protons are in a vacuum) and r is the distance from the point charge to the point where the potential is being measured. Because the electric potential is an scalar, we can simply add the contribution of the two potentials in the midpoint between the protons. Thus:

\displaystyle{U_{midpoint}=\frac{q}{4\pi \epsilon_0r}}+\frac{q}{4\pi \epsilon_0r}}=\frac{q}{2\pi \epsilon_0r}}}

Substituting the values q=1.602 \cdot10^{-19}\ C, \displaystyle{\frac{1}{4\pi\epsilon_0}=8.99\cdot 10^9 N\cdot m^2\cdot C^{-2}} and r=0.5 \cdot 10^{-9} m we obtain:

\displaystyle{U_{midpoint}=\frac{q}{2\pi \epsilon_0r}}=5.759 \approx 5.8 V}

The resulting direction of the electric field will lie on the line that joins the charges but since it is calculated in the midpoint and the charges are the same we can directly say that its magnitude is zero.

6 0
3 years ago
One degree Celsius indicates the same temperature change as
miss Akunina [59]
The Celsius degree is the same size as the Kelvin.
The correct choice is 'C'.
7 0
4 years ago
Jane walked 5.00 meters on a road that inclines 13.0 degrees. How much distance did she cover horizontally?
Paladinen [302]
Any options available?
8 0
3 years ago
For every O ion, two Na ions are needed to balance charges. Which ratio represents the relationship between Na and O? 1 Na:1 O 1
quester [9]

For every O ion, two Na ions are needed to balance charges. Which ratio represents the relationship between Na and O?


2 Na:1 O


6 0
3 years ago
Read 2 more answers
Other questions:
  • The sun emits energy in the form of electromagnetic waves produced by nuclear reactions deep in the sun's interior. Assume that
    8·1 answer
  • Which researcher first realized that certain psychic secretions pointed to a simple but important form of learning
    11·1 answer
  • The theory that light exists in quantized "chunks" was proposed in response to which of the following? A. Electron interference
    10·1 answer
  • a man exerts 3000.00N of force to push a car 35.00 meters in 90.00 seconds.... 1. what is the work done 2.what is the power gene
    7·1 answer
  • Interactive Solution 22.43 provides one model for solving this problem. The maximum strength of the earth's magnetic field is ab
    14·1 answer
  • A man stands still on a moving walkway that is going the speed of 0.4 m a second to the east what is the velocity of the man acc
    8·1 answer
  • 9 write the Greek etymological meaning of Tracheophyta.​
    6·1 answer
  • A circuit has a current of 1.2 A. If the voltage decreases to one-third of its original amount while the resistance remains
    11·1 answer
  • Which of the following could describe the velocity of an object?
    12·2 answers
  • If you create an equilibrium mixture from f e 3 and s c n − ions, adding c l − ions will choose. Highlight_off because choose. H
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!