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
erica [24]
3 years ago
6

If an object has the same number of positive and negative changes, it’s electrical charge is ?

Physics
1 answer:
Marrrta [24]3 years ago
8 0

The electrical charge is neutral. I hope this helps!

You might be interested in
A box is hanging from two strings. String #1 pulls up and left, making an angle of 50° with the horizontal on the left, and stri
creativ13 [48]

Answer:

mb = 3.75 kg

Explanation:

System of forces in balance

ΣFx =0  

ΣFy = 0

Forces acting on the box

T₁ : Tension in string 1 ,at angle of 50° with the horizontal on the left

T₂  = 40 N : Tension in string 2, at angle of 75° with the horizontal on the right.

Wb :Weightt of the box (vertical downward)

x-y T₁ and T₂ components

T₁x= T₁cos50°

T₁y= T₁sin50°

T₂x= 30*cos75° = 7.76 N

T₂y= 30*sin75° = 28.98 N

Calculation of the Wb

ΣFx = 0  

T₂x-T₁x = 0

T₂x=T₁x

7.76 = T₁cos50°

T₁ = 7.76 /cos50° = 12.07 N

ΣFy = 0  

T₂y+T₁y-Wb = 0

28.98 + 12.07(cos50°) = Wb

Wb = 36.74 N

Calculation of the mb ( mass of the box)

Wb = mb* g

g: acceleration due to gravity = 9.8 m/s²

mb = Wb/g

mb = 36.74 /9.8

mb = 3.75 kg

8 0
3 years ago
A 4-kg object falls vertically a distance of 5 m. its potential energy has changed by approximately how much?
Brums [2.3K]
Given:
m = 4 kg, the mass of the object
h = 5 m, distance fallen

Neglect air resistance.

The PE (potential energy) is 
PE = mgh = (4 kg)*(9.8 m/s²)*(5 m) = 196 J

The PE is converted into KE (kinetic energy) after the fall. 
Therefore the PE decreased by 196 J ≈ 200 J

Answer: d. It has decreased by 200 J
7 0
3 years ago
The ____ force is the sum of all the forces that act upon each other
Pavel [41]
the resultant force
5 0
3 years ago
Read 2 more answers
A container with a mass of 5 kg is lifted to a height of 8m. How much work done by the gravitional force​
anzhelika [568]

work done by gravitational force = mass × g × height

= mgh

= 5 × 10 × 8 N

<h3>= 400 N</h3>

5 0
2 years ago
PLEASE HELPPP IF YOU CAN!
Lunna [17]

Answer:

2 m/s²

Explanation:

F = ma

4 = 2(a)

a = 2

3 0
3 years ago
Other questions:
  • A child sets off the firecracker at a distance of 100 m from the family house. what is the sound intensity β100 at the house?
    10·2 answers
  • On a certain planet, which is perfectly spherically symmetric, the free-fall acceleration has magnitude g = go at the north pole
    7·1 answer
  • Which type of plate boundary is most closely associated with the formation of new ocean floor?
    11·1 answer
  • Sediment laid down by glacial meltwater is called
    5·2 answers
  • What is the correct equation kinetic enery
    6·1 answer
  • If you use a force of 90 N to pick up a 10 pound bag of charcoal, what is the acceleration?
    7·1 answer
  • Suppose that you are on an unknown planet in a distant galaxy. Let the length of a physical pendulum be 1.02 m. In the physical
    14·1 answer
  • The wavelengths for visible light rays correspond to which of these options?
    11·2 answers
  • A metal object is suspended from a spring scale. The scale reads 920 N when the object is suspended in air, and 750N when the ob
    6·1 answer
  • How long would it take to go from 3m/s to 7m/s when riding a bike if the acceleration was 1.5 m/s/s
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!