The correct response is:
The balloons will push away from each other.
Since both balloons are negatively charged, they will repel each other due to the electrostatic force between like charges.
Janice holds two negatively charged balloons near each other. What will happen with the balloons?(1 point)
Responses
The balloons will become neutral.
The balloons will push away from each other.
The balloons will push away from each other.
The balloons will be attracted to each other.
The balloons will be attracted to each other.
The balloons will not move.
11 answers
What force can be produced with an electrical current?(1 point)
Responses
Magnetic
Magnetic
Nuclear
Nuclear
Chemical
Chemical
Potential
Responses
Magnetic
Magnetic
Nuclear
Nuclear
Chemical
Chemical
Potential
The correct response is:
Magnetic
An electrical current produces a magnetic field, which is the basis for the operation of many electrical devices, such as motors and generators.
If the mass of planet Earth doubled, how would the force of gravity between Earth and the Sun change?(1 point)
Responses
The force of gravity would increase four times
The force of gravity would increase four times
The force of gravity would double
The force of gravity would double
The force of gravity would decrease by half
The force of gravity would decrease by half
The force of gravity would not change
Responses
The force of gravity would increase four times
The force of gravity would increase four times
The force of gravity would double
The force of gravity would double
The force of gravity would decrease by half
The force of gravity would decrease by half
The force of gravity would not change
The correct response is:
The force of gravity would double.
The force of gravity between two objects is described by Newton's law of universal gravitation, which states that the gravitational force is directly proportional to the product of the masses of the two objects. If the mass of the Earth doubles, the gravitational force between the Earth and the Sun would also double.
A student rubs a balloon made of rubber on his hair and notices that the balloon sticks to his hair afterwards. What happened to the electrical charges of both the student’s hair and the balloon?(1 point)
Responses
The balloon’s charge became neutral, and the hair’s charge became positive
The balloon’s charge became neutral, and the hair’s charge became positive
The balloon’s charge became negative, and the hair’s charge became positive
The balloon’s charge became negative, and the hair’s charge became positive
The balloon’s charge became positive, and the hair’s charge became positive
The balloon’s charge became positive, and the hair’s charge became positive
The balloon’s charge became negative, and the hair’s charge became negative
The balloon’s charge became negative, and the hair’s charge became negative
Responses
The balloon’s charge became neutral, and the hair’s charge became positive
The balloon’s charge became neutral, and the hair’s charge became positive
The balloon’s charge became negative, and the hair’s charge became positive
The balloon’s charge became negative, and the hair’s charge became positive
The balloon’s charge became positive, and the hair’s charge became positive
The balloon’s charge became positive, and the hair’s charge became positive
The balloon’s charge became negative, and the hair’s charge became negative
The balloon’s charge became negative, and the hair’s charge became negative
The correct response is:
The balloon’s charge became negative, and the hair’s charge became positive.
When the balloon is rubbed against the hair, electrons are transferred from the hair to the balloon. This causes the balloon to gain a negative charge (due to the excess electrons) and the hair to lose electrons, resulting in a positive charge.
A student touches a rubber ball with a negatively charged plastic rod. How will the negative charges be distributed on the ball?(1 point)
Responses
On the bottom of the ball’s surface
On the bottom of the ball’s surface
Evenly distributed on the ball’s surface
Evenly distributed on the ball’s surface
Evenly distributed on the ball’s inside
Evenly distributed on the ball’s inside
On the ball’s surface where the rod touches the ball
Responses
On the bottom of the ball’s surface
On the bottom of the ball’s surface
Evenly distributed on the ball’s surface
Evenly distributed on the ball’s surface
Evenly distributed on the ball’s inside
Evenly distributed on the ball’s inside
On the ball’s surface where the rod touches the ball
The correct response is:
Evenly distributed on the ball’s surface.
When a negatively charged plastic rod comes into contact with a conductive object like a rubber ball, the negative charges will distribute themselves evenly across the surface of the ball. This is due to the repulsion between like charges.
A student investigates how charge is distributed in a conductor. She tapes two unopened cans of soda onto foam cups as shown below. The cans are touching each other. She places a negatively charged balloon near the can on the left as shown.
In which direction do the negatively charged atoms inside the soda cans move?
(1 point)
Responses
From the left to the right of the cans
From the left to the right of the cans
From the top to bottom of the cans
From the top to bottom of the cans
From the right to the left of the cans
From the right to the left of the cans
From the bottom to the top of the cans
From the bottom to the top of the cans
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In which direction do the negatively charged atoms inside the soda cans move?
(1 point)
Responses
From the left to the right of the cans
From the left to the right of the cans
From the top to bottom of the cans
From the top to bottom of the cans
From the right to the left of the cans
From the right to the left of the cans
From the bottom to the top of the cans
From the bottom to the top of the cans
Skip to navigation
The correct response is:
From the left to the right of the cans.
When the negatively charged balloon is brought near the can on the left, it will repel the negatively charged electrons within the soda cans. This repulsion causes the electrons in the left can to move away from the balloon, resulting in a net positive charge on the left can and a net negative charge on the right can, causing the negatively charged atoms to move from left to right.
1 answer