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
amm1812
3 years ago
8

In many problems where the potential energy is considered between two objects, the potential energy is defined as zero when the

particles are in infinite distance apart. Using the definition of potential energy, explain why the potential energy would be positive if the force between the particles is repulsive and negative if the force between the particles is attractive for noninfinite distances.
Engineering
1 answer:
algol [13]3 years ago
4 0

Answer:

potential energy=ε Qq/r. Putting values of charge along with sign and calculating the potential energy will tell whether the resultant force is attractive or repulsive.

Explanation:

potential energy=ε Qq/r

q and Q are charges on each particle

So in case the particles have attractive force between them, one particle will be negative and the other will be positiive. The result will be negative.

In case the particles have repulsive forces, the charge on both particles will be either positive or negative. The result will be positive

You might be interested in
You can change lanes during a turn long as there’s no traffic and you driving slowly
Vanyuwa [196]
Your allowed to switch lanes as long as the road is clear and you use signals.
5 0
3 years ago
I'll mark brainliest plz help
Citrus2011 [14]

Answer:

Explanation:

There are three points in time we need to consider.  At point 0, the mango begins to fall from the tree.  At point 1, the mango reaches the top of the window.  At point 2, the mango reaches the bottom of the window.

We are given the following information:

y₁ = 3 m

y₂ = 3 m − 2.4 m = 0.6 m

t₂ − t₁ = 0.4 s

a = -9.8 m/s²

t₀ = 0 s

v₀ = 0 m/s

We need to find y₀.

Use a constant acceleration equation:

y = y₀ + v₀ t + ½ at²

Evaluated at point 1:

3 = y₀ + (0) t₁ + ½ (-9.8) t₁²

3 = y₀ − 4.9 t₁²

Evaluated at point 2:

0.6 = y₀ + (0) t₂ + ½ (-9.8) t₂²

0.6 = y₀ − 4.9 t₂²

Solve for y₀ in the first equation and substitute into the second:

y₀ = 3 + 4.9 t₁²

0.6 = (3 + 4.9 t₁²) − 4.9 t₂²

0 = 2.4 + 4.9 (t₁² − t₂²)

We know t₂ = t₁ + 0.4:

0 = 2.4 + 4.9 (t₁² − (t₁ + 0.4)²)

0 = 2.4 + 4.9 (t₁² − (t₁² + 0.8 t₁ + 0.16))

0 = 2.4 + 4.9 (t₁² − t₁² − 0.8 t₁ − 0.16)

0 = 2.4 + 4.9 (-0.8 t₁ − 0.16)

0 = 2.4 − 3.92 t₁ − 0.784

0 = 1.616 − 3.92 t₁

t₁ = 0.412

Now we can plug this into the original equation and find y₀:

3 = y₀ − 4.9 t₁²

3 = y₀ − 4.9 (0.412)²

3 = y₀ − 0.83

y₀ = 3.83

Rounded to two significant figures, the height of the tree is 3.8 meters.

7 0
3 years ago
I am trying to test out the software Classroom relay and I am just ask if there is any way kids can stop Classroom relay form se
Inessa05 [86]

Answer:

What is classroom relay?

Plz answer in ch-at

Explanation:

3 0
3 years ago
Read 2 more answers
26 V is measured across a 220 Ω resistance. This means that resistor current equals ________. Group of answer choices 1.2 A 57 A
zysi [14]
You can use ohm’s law
I=V/R
3 0
3 years ago
Frank D. Drake, an investigator in the SETI (Search for Extra-Terrestrial Intelligence) program, once said that the large radio
AlexFokin [52]

Answer:

attached below

Explanation:

4 0
3 years ago
Other questions:
  • When choosing a respirator for your job, you must conduct a _____ test.
    15·1 answer
  • What is the main role of matrix in composites! a)-to transfer stress to the other phases b)- to protect phases from environment
    7·1 answer
  • A growing trend in urban design is the concept of a rooftop garden. If every building in a city were to install a rooftop garden
    13·1 answer
  • What are the desired characteristics or values for the following parameters of an ideal amplifier?o Phase change as a function o
    10·1 answer
  • A misfire code is a type ____ DTC<br> A) 1 or 2<br> B) a or b<br> C) c or d<br> D l or ll
    15·1 answer
  • Technician A says that reinforcements may be made of plastic.
    6·1 answer
  • Robots make computations and calculations using what part
    12·1 answer
  • The pressure less than atmospheric pressure is known as:
    6·1 answer
  • Reverse Engineering: Structural Analysis
    14·1 answer
  • If a population has no predadors and plenty of available resources, how might that population change
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!