An electroscope is a device that detects charge on objects that touch it or are brought near it. John rubs a piece of cotton fabric on a plastic rod and then touches the rod to the electroscope.What methods of charging does John use?

Answers

Answer 1

Answer: The answer is Static Electricity. When you say static electricity, there is a certain imbalance in the particles present on the surface of the material. That is why the electroscope was able to detect static electricity from the piece of cloth and plastic rod

Answer 2

Answer:

Answer:

John charges the rod through friction, then charges the electroscope through conduction. D on edg2020

Explanation:

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How are galaxies created

Answers

Hi There! :)

How are galaxies created

Instead of large gas clouds collapsing to form a galaxy in which the gas breaks up into smaller clouds, it is proposed that matter started out in these “smaller” clumps (mass on the order of globular clusters), and then many of these clumps merged to form galaxies, which then were drawn by gravitation to form galaxy ...

Hi!Galaxies are thought to begin as small clouds of stars and dust swirling through space. As other clouds get close, gravity sends these objects careening into one another and knits them into larger spinning packs.

Which change will always result in an increase in the gravitational force between two objects?

Answers

The gravitational force of two objects, by definition, is given by:

Where,

G: gravitational constant

m1: mass of object number 1.

m2: mass of object number 2.

d: distance between both objects.

Therefore, according to the given equation, a change that always results in an increase in gravitational force is:

Increase in the mass of the objects and decrease in the distance between them.

Answer:

A change that will always result in an increase in the gravitational force between two objects is:

Increase in the mass of the objects and decrease in the distance between them.

The change that will always result in an increase in the gravitational force between two objects is increasing the masses of the objects and decreasing the distance between the objects

How does the concentration of a hydrogen ion affect the ph levels of a substance?

Answers

Acidic and basic are two extremes that describe chemicals, just like hot and cold are two extremes that describe temperature. Mixing acids and bases can cancel out their extreme effects, much like mixing hot and cold water can even out the water temperature. A substance that is neither acidic nor basic is neutral.

The character of acidic, basic and neutral is defined by the concentration of hydrogen ions [H+](mol/L). A solution with a concentration of hydrogen ions higher than 10-7mol/L is acidic, and a solution with a lower concentration is alkaline (another way to say basic). Using the formula, pH=-log[H+], a pH of 7 is neutral, a pH less than 7 is acidic, and a pH greater than 7 is basic. As one can see from this formula, ten times a given concentration of hydrogen ions means one unit lower in terms of pH value (higher acidity), and vice versa.

Pure water is neutral, with a pH of 7.0. When chemicals are mixed with water, the mixture can become either acidic or basic. Vinegar and lemon juice are acidic substances, while laundry detergents and ammonia are basic.

Chemicals that are very basic or very acidic are called "reactive." These chemicals can cause severe burns. Automobile battery acid is an acidic chemical that is reactive. Automobile batteries contain a stronger form of some of the same acid that is in acid rain. Household drain cleaners often contain lye, a very alkaline chemical that is reactive.

Generators need a source of energy to produce electricity. Which form of energy is a nonrenewable source of energy?hydro (water) energy

geothermal energy

fossil fuel

wind energy

Answers

Non-renewable energy are the form of energy whose source cannot be recycled and are limited in numbers. Out of all the options, only fossil fuel is Non-renewable otherwise all of them are renewable and can be recycled.

In short, Your Answer would be Option C) Fossil Fuel

Hope this helps!

Your Answer Would Be Fossil Fuel. All Of The Rest Are Renewavle. Hope This Helps!

When all parts of a circuit are composed of conducting materials, the circuit is said to be A. shorted.
B. closed.
C. parallel.
D. open.

Answers

Answer:

The circuit is said to be closed

Explanation:

Electricity is defined as the movement of electrons within a conductor in a certain path.

This means that, for electricity to flow, two conditions need to be fulfilled:

1- there must be conductor materials for electrons to move through

2- a closed path (loop) must exist to allow the flow of electrons

If wither of these conditions is not met, the movement of electrons will be stopped and therefore, electricity will not be conducted

Based on the above, when all parts of a circuit are composed of conducting materials (conductors forming closed path), the circuit is said to be closed (a loop exists for electrons to move in).

Hope this helps :)

When all arts of a circuit are composed of conducting materials, it is said to be closed, so B.

What does the term equilibrium refer to?

Answers

It depends on what subject but usually it means the balance. In physics, it would be when (for example) the forces acting on an object are equal and the object is therefore in equilibrium. In Biology it would be the balance of the conditions of the body, water levels for example.

Answer:the resting position of the wave

Explanation:

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Choose all the answers that apply. The continents _____. were once connected have always been in the same location are slowly drifting have stopped moving are made mostly of basalt

For life to flourish on Earth, several changes occurred that affected the atmosphere, such as _____.

Gamma rays are waves of energy that have no charge.