The electrostatic interaction between three objects is as shown. Which of the following is a possible combination of the correct charges on each? Choose all answers.

A: Neutral B: Positive C: Positive

A: Neutral B: Negative C: Negative

A: Positive B: Positive C: Positive

A: Negative B: Positive C: Negative

A: Positive B: Neutral C: Positive

A ball is dropped and bounces off the floor. Its speed is the same immediately before and immediately after the collision. Which of the following is true about the collision between the ball and the floor?

The ball’s momentum changes direction but not magnitude.

The ball’s momentum is conserved.

The ball’s momentum changes magnitude but not direction.

The impulse delivered to the ball by the floor is zero.

The impulse delivered to the floor by the ball is zero.

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

negatively charged because it has excess electrons

positively charged because it has excess electrons

positively charged because it has a deficiency of electrons

negatively charged because it has a deficiency of electrons

What is the end result of charging by contact?

Both object have the same charge, so they will repel one another

Both object have the same charge, so they will attract one another

Both object have the opposite charge, so they will attract one another

Both object have the opposite charge, so they will repel one another

When two objects are rubbed together, there is a transfer of electrons. How do you determine which object acquires the transferred electrons?

Transfer is based on how much electron affinity that each object has

Always transfer from the bigger to the smaller object, to make it even

Transfer is based on the initial charge of the two objects

Always transfer from the more negative to the more positive object

When a charged object contacts another object (one is usually a conductor), there is a transfer of electrons. How do you determine which object acquires the transferred electrons?

Always transfer from the more negative to the more positive object

Always transfer from the bigger to the smaller object, to make it even

Transfer is based on the initial charge of the two objects

Transfer is based on how much electron affinity that each object has

When you brush your hair you scrape off electrons, and your hair

becomes positively and negatively charged

As a pair of charges is brought close together, the force between them

Increases only if they are the same sign

Increases only if they are the opposite sign

When you brush your hair you scrape off electrons, and your hair

becomes positively and negatively charged

As a pair of charges is brought close together, the force between them

Increases only if they are the same sign

Increases only if they are the opposite sign

When a plastic rod is rubbed with wool, the wool acquires a positive charge because

electrons are transferred from the wool to the rod

protons are transferred from the wool to the rod

protons are transferred from the rod to the wool

electrons are transferred from the rod to the wool

Use the following information to answer the question: Object A is NEGATIVELY charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. What type of charge could Object D possess?

Positive or Negative or Neutral

What is the triboelectric series?

A list of materials arranged by strength of electron affinity

Like the World Series: objects compete for electrons

A series of events that create a static charge

A number to show how well an object conducts electrons

When you brush your hair you scrape off electrons, and your hair

becomes positively and negatively charged

As a pair of charges is brought close together, the force between them

Increases only if they are the same sign

Increases only if they are the opposite sign

When a plastic rod is rubbed with wool, the wool acquires a positive charge because

electrons are transferred from the wool to the rod

protons are transferred from the wool to the rod

protons are transferred from the rod to the wool

electrons are transferred from the rod to the wool

Use the following information to answer the question: Object A is NEGATIVELY charged. Object A and Object B attract. Object B and Object C repel. Object C and Object D attract. What type of charge could Object D possess?

Positive or Negative or Neutral

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Initiator Educator

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60 questions

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FILL IN THE BLANK QUESTION

1 min • 1 pt

A neutral object becomes __charged if electrons are removed.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Two conducting spheres A and B, are placed on insulating stands as shown. A negatively charged balloon is brought near A. With the balloon still nearby, the two spheres are separated by moving the insulating stands. What is the resulting charge on A and B?

A: Positive

B: Positive

A: Negative

B: Positive

A: Negative

B: Negative

A: Positive

B: Negative

REORDER QUESTION

1 min • 1 pt

Reorder the following to show the progression of steps in Charging by Induction.

The diagram on the right is an example of (a)

polarization

induction

charging

charging by friction

protons moving from rod to sphere

electrons moving from sphere to rod

charging by contact

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A solid conducting sphere is given a positive charge Q. How is the charge Q distributed in or on the sphere?

It is concentrated at the center of the sphere.

It is uniformly distributed throughout the sphere.

Its density decreases radially outward from the center.

Its density increases radially outward from the center.

It is uniformly distributed on the surface of the sphere only

Choose the correct sign of the charge on Can I and Can J?
Can I (a)
Can J (b)

Negative

Positive

Neutral

A negatively charged balloon will be attracted to a neutral wooden cabinet due to polarization. Which one of the following diagrams best depicts why this occurs? __

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Electrostatics Review

60 questions

A neutral object becomes __charged if electrons are removed.

Two conducting spheres A and B, are placed on insulating stands as shown. A negatively charged balloon is brought near A. With the balloon still nearby, the two spheres are separated by moving the insulating stands. What is the resulting charge on A and B?

Reorder the following to show the progression of steps in Charging by Induction.

The diagram on the right is an example of (a)

A solid conducting sphere is given a positive charge Q. How is the charge Q distributed in or on the sphere?

Choose the correct sign of the charge on Can I and Can J?
Can I (a)
Can J (b)

A negatively charged balloon will be attracted to a neutral wooden cabinet due to polarization. Which one of the following diagrams best depicts why this occurs? __

Choose the direction of electron flow in the diagram shown?
(a)

The electrostatic interaction between three objects is as shown. Which of the following is a possible combination of the correct charges on each? Choose all answers.

Which of the following is constant for an object
in uniform circular motion?

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Electrostatics Review

60 questions

A neutral object becomes __charged if electrons are removed.

Two conducting spheres A and B, are placed on insulating stands as shown. A negatively charged balloon is brought near A. With the balloon still nearby, the two spheres are separated by moving the insulating stands. What is the resulting charge on A and B?

Reorder the following to show the progression of steps in Charging by Induction.

The diagram on the right is an example of ​ (a)

A solid conducting sphere is given a positive charge Q. How is the charge Q distributed in or on the sphere?

Choose the correct sign of the charge on Can I and Can J?Can I (a) Can J​ (b)

A negatively charged balloon will be attracted to a neutral wooden cabinet due to polarization. Which one of the following diagrams best depicts why this occurs? __

Choose the direction of electron flow in the diagram shown?​ ​ (a)

The electrostatic interaction between three objects is as shown. Which of the following is a possible combination of the correct charges on each? Choose all answers.

Which of the following is constant for an objectin uniform circular motion?

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The diagram on the right is an example of (a)

Choose the correct sign of the charge on Can I and Can J?
Can I (a)
Can J (b)

Choose the direction of electron flow in the diagram shown?
(a)

Which of the following is constant for an object
in uniform circular motion?