A student is modeling electric forces and potential energy in a system with two opposite charges. For his model, he uses a rubber band with a marble attached to either end. When the rubber band is stretched, does the model predict what will happen to the force and potential energy in the system? Explain.

Answer:

the potential energy will increase

Explanation:

The model will predict an increase in both the potential energy and increase in force ( i.e. work done )

The increase in work done in a model of electric forces and potential energy is directly proportional to the increase in the potential energy as the stretched rubber band changes its position after it is stretched.

The model described in the question typically represent a transfer of energy from point A to point B in a system by doing work in a system ( i.e. stretching of the rubber band ).

Hence we can conclude that The model will predict an increase in both the potential energy and increase in force ( i.e. work done ).

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If an air mass formed at the location labeled “Air Mass Formation”, what properties would the air mass most likely have? Choose one answer below.

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This question is about magnets and net force (I think.) Please no absurd answers!

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Periodic table of elements metals and nonmetals questions

The distance versus time graph for Object A and Object B are shown.


[IMAGE] A graph titles Distance vs Time. A curved line is drawn through point 10 on y axis and this line is labeled Object A. The graph for Object B is a straight slanting line passing through the origin


Which statement best describes the motion of Object A and Object B?


Both objects move with variable speed.

Both objects move with constant speed.

Object A moves with constant speed and Object B moves with variable speed.

Object A moves with variable speed and Object B moves with constant speed.

Does mass influence how quickly an object falls?

Parallel Circuit

Series Circuit

Electrical Current

Electrical Discharge

Static Electricity

Answers:

A Circuit that contains more than one path for current flow.

Electric Charge at rest;generally produced by friction or introduction.

The Loss of static electricity as charges move off an object.

A Flow Of Charged Particles From One Point To Another.

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The physical (natural) laws which establish how things work can be investigated by the scientific method. True or False

someone made a copy of an analog wave in a digital wave compare the copies with the original waves and explain which type of waves more reliable way to encode code to transmit information

Ken wants to jump and have some fun too! Barbie loans Ken her bungee cord. Is this a good idea? Explain with evidence and reasoning. (barbie bungee jump lab)

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Explain the relationship between wavelength and frequency in the electromagnetic spectrum.

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O They model all of Earth’s surface.
O They are flat and two dimensional.
O They represent underwater features using symbols.
O They provide detailed information about towns or cities.

ILL MARK BRAINLEIST
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Jessica is visiting a park with her mother. Jessica sits on a swing. Her mother pulls the swing to a height of 3 meters above the ground and lets it go. The image shows Jessica at three positions on the swing. Jessica‘s mass is 44 kilograms and the maximum velocity of the swing is 5 meters/second. What’s the energy she has at each position shown? Ignore friction and air resistance.

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a. All matter and energy were contained inside the small point.
b. Matter and energy came from dark areas of the universe and were attracted to the small point.
c. Matter and energy fell into the small point the same way a black hole attracts matter and energy.
d. Matter was condensed into a single point until energy was attracted to the matter from dark areas of the universe.

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them. Make your claim and support it with evidence/reasoning. Write using complete sentences. 1st Law - Law of Inertia

2nd Law - Law of Force and Acceleration

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This chart lists four examples of two objects that are in contact.

A 3-column table with 4 rows. The first column has entries Example 1, Example 2, Example 3, Example 4. The second column labeled Object 1 has entries fire, a metal at 80 degrees Celsius, the cool ocean, a tool with a lot of thermal energy. The third column labeled Object 2 has entries air, a metal at 12 degrees Celsius, the warm air, a material with little thermal energy.

Which statement accurately describes the flow of heat in each example?

Heat will flow from Object 1 to Object 2 in examples 2 and 4, and heat will flow from Object 2 to Object 1 in examples 1 and 3.
Heat will flow from Object 1 to Object 2 in examples 1 and 3, and heat will flow from Object 2 to Object 1 in examples 2 and 4.
Heat will flow from Object 1 to Object 2 in Example 3, and heat will flow from Object 2 to Object 1 in examples 1, 2, and 4.
Heat will flow from Object 1 to Object 2 in examples 1, 2, and 4, and heat will flow from Object 2 to Object 1 in Example 3.


30 points

A student made the table shown to list some contact and non-contact forces.


Examples of Forces
Contact Forces Non-Contact Forces
The force exerted by a stretched spring The force applied by Earth and sun on each other
The electrical force exerted by a positive charge on a negative charge Magnetic attraction between two magnets


Which statement best explains why the table is incorrect?
Spring force is a force acting at a distance.
Electrical force is not a contact force.
Gravitational force can act between planets and sun only when they are in contact.
Magnetic attraction is a contact force

A car moving has a speed of 35 m/s. What acceleration would it have if it took 5.0 s to come to a complete stop?

For this situation to demonstrate a balanced force, how much force must Omar apply? (In the picture, Sam is pushing a box to the right with a force of 10N, and Omar is pushing the box to the left with a force of _____ N)



Question 8 options:

10 N


20 N


100 N


0 N

Does magnetism depend on size?

Does mass influence how quickly an object falls?

Claim:

Two Pieces of Evidence:

Reasoning:

The distance versus time graph for Object A and Object B are shown.

{IMAGE} A graph titles Distance vs Time. A curved line is drawn through point 10 on y axis and this line is labeled Object A. The graph for Object B is a straight slanting line passing through the origin

Which statement best describes the motion of Object A and Object B?

Both objects move with variable speed.
Both objects move with constant speed.
Object A moves with constant speed and Object B moves with variable speed.
Object A moves with variable speed and Object B moves with constant speed.