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
PtichkaEL [24]
3 years ago
15

17.Explain the different ways that an object can become electrically charged.

Physics
1 answer:
Debora [2.8K]3 years ago
4 0

17.

There are three different methods for charging objects:

- Friction: in friction, two objects are rubbed against each other. As a result, electrons can be passed from one object to the other, so one object will gain a net negative charge while the other object will gain a net positive charge due to the lack of electrons.

- Conduction: this occurs when two conductive objects are put in contact with each other, and charges (electrons, usually) are transferred from one object to the other one.

- Induction: this occurs when two objects are brought closer to each other, but not in contact. If one of the two objects has a net charge (different from zero) on its surface, then it will induce a movement of charges in the second object: in particular, in the second object, charges of the opposite polarity will be attracted towards the first object, while charges of same polarity will be repelled further away.

18.

Charged objects produce around themselves an electric field. The strenght of the electric field is given by (assuming the charged objects are spherical)

E=k\frac{q}{r^2}

where k is the Coulomb's constant, q is the magnitude of the charge and r the distance from the centre of the charge. As we see, the strength of the field is inversely proportional to the square of the distance.

Also, the direction of the field is determined by the sign of the charge:

- if the charge is positive, the electric field points away from the charge (this means that other positive charges in the field will be repelled away)

- if the charge is negative, the electric field points towards the charge (this means that other positive charges in the field will be attracted towards it)

19.

Electrical force is given by:

F=k\frac{q_1 q_2}{r^2}

where k is the Coulomb's constant, q1 and q2 are the two charges, and r their separation.

Gravitational force is given by:

F=G\frac{m_1 m_2}{r^2}

where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r their separation.

Similarities between the two forces:

- Both are inversely proportional to the square of the distance between the two objects, r

- Both are non-contact forces (the two objects can experience the forces even if they are not in contact)

- Both forces have infinite range

Differencies between the two forces:

- The electric force can be either attractive or repulsive, while the gravitational force is attractive only

- The electric force is much stronger than the gravitational force, due to the much larger value of the Coulomb's constant k compared to the gravitational constant G

You might be interested in
Enter an expression in the box to Write the equation of the line perpendicular to y=-3x-1 that passes through the point (3,4).
Dafna11 [192]

Answer: -3x+13

Explanation:

4 0
3 years ago
What is the density of an object with mass of 60 g and a volume of 2cm3
Artemon [7]

Answer:

D=mass /volume

=60/0.002

=30000

4 0
2 years ago
Nahzvsbsnsnsmsskskssks
prisoha [69]

Answer:

some one might report you

Explanation:

3 0
3 years ago
Read 2 more answers
Imagine that you’re observing a collision. Which action would allow you to determine whether the collision is inelastic?
Thepotemich [5.8K]

The answer is B;) in plato

3 0
3 years ago
Read 2 more answers
Why are common measurement systems important
kenny6666 [7]
So that international people don't mistake units for others. ex 1 inch could be mistaken for 1 cm in non American countries
6 0
3 years ago
Other questions:
  • After hitting a long fly ball that goes over the right fielder's head and lands in the outfield, the batter decides to keep goin
    7·1 answer
  • A 535 kg roller coaster car began at rest at the top of a 93.0 m hill. Now it is at the top of the first loop-de-loop.
    11·2 answers
  • A stone is dropped into a well. The sound of the splash is heard 6.25 s later. What is the depth of the well? (Take the speed of
    10·1 answer
  • Select the correct answer.
    12·2 answers
  • If the person drops box from 3.8 m how much energy is transferred from potential energy to kinetic energy
    13·1 answer
  • What is a property of matter that can be measured or observed using the 5 senses
    13·2 answers
  • How would you find the horizontal net force for the free body diagram below
    13·1 answer
  • The SI unit for energy is Newton true or false
    14·1 answer
  • Good Luck! And Happy Weekend!
    5·1 answer
  • Will mark brainlist<br> THANKS!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!