What causes the gravitational pull?
What causes the gravitational pull?
Earth’s gravity is what keeps you on the ground and what makes things fall. So, the closer objects are to each other, the stronger their gravitational pull is. Earth’s gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.
What two factors affect gravitational pull and orbital speed?
Two major factors, mass and distance, affect the strength of gravitational force on an object.
Which of two factors influence the weight of an object due to gravitational pull?
Answer is: A) the mass and radius of the planet. Gravity as a force which causes any two bodies to be attracted to each other. The weight of an object is the amount of force acting on the object due to gravity.
What are three factors of gravity?
Newton summarized the relationship between the strength of gravitation pull and these three factors in this equation:
- Fg = G M1 M2 / (D12)2 where M1 and M2 are the masses of the objects, and D12 is the distance between the centers of the two objects.
- Fg12 = G M1 M2 / (D12)2
- Fg34 = G M3 M4 / (D34)2
- Fg12 G M1 M2 / (D12)2
What are the factors that affect gravity?
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Why can some people attract others?
We know from Isaac Newton and his law of gravitation that any two objects in the Universe exert a force of attraction on each other. The greater the mass of the two objects and the shorter the distance between them, the stronger the pull of the gravitational forces they exert on each other.
Can in any situation two positively charged spheres attract each other?
Solution : Yes, when the charge on one body (q1) is much greater than that on the other (q2) and they are close enough to each other so that force of attraction between q1 and induced charge on the other exceeds the force of repulsion between q1andq2.
Why do things attract?
Objects with mass attract each other because of gravity. Gravity is caused by the attraction of objects with mass. The answer is gravity. I think gravity is the effect of space being created inside of matter, flowing out and matter being drawn towards that space.
Why do same charges repel?
The electric field and resulting forces produced by two electrical charges of the same polarity. The two charges repel each other. If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge. The two charges attract each other.
Why do neutral and charged objects attract?
Neutral object are attracted to either charge. The region that has too many electrons is negatively charged, the other region positively, because of lack of electrons. The positive region since it is closer to the charge will be attracted to this charge. This process is called induction.
What happens when two positively charged objects move closer to each other?
In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. That is, a positively charged object will exert a repulsive force upon a second positively charged object. This repulsive force will push the two objects apart.
What are the similarities and differences between electric force and gravitational force?
They both act between two bodies without any means of contact. However gravitational force acts on mass while the electric force acts on charge. Gravitational force are only attractive while electric field can be attractive/repulsive. Electric field is much stronger than gravitational field.
Can two like charges attract each other?
Solution : (a) yes. Two bodies are placed close to each other where one has much more charge than the other. Then due to induction, force of attraction becomes more than force of repulsion.
What happens when a positive object touches a neutral object?
Charging by conduction involves the contact of a charged object to a neutral object. Suppose that a positively charged aluminum plate is touched to a neutral metal sphere. The neutral metal sphere becomes charged as the result of being contacted by the charged aluminum plate.
What is a charged object give three examples?
There are three ways that objects can be given a net charge. These are: For example, rubbing glass with silk or saran wrap generally leaves the glass with a positive charge; rubbing PVC rod with fur generally gives the rod a negative charge. Charging by contact – useful for charging metals and other conductors.
What happens when a charged object touches an uncharged object?
By bringing a charged object into contact with an uncharged object, some electrons will migrate to even out the charge on both objects. Charging by conduction gives the previously uncharged object a permanent charge. An uncharged object can also be charged using a method called charging by induction.
Can one thundercloud contain both positive and negative charges?
An object with an unknown charge is brought close to the electroscope. Can one thundercloud contain both positive and negative charge? Yes. A thundercloud has a negative charge, and an object on the ground as a positive charge.
What happens to the charge of a material when electrons are removed from it?
Any negatively charged object has an excess of electrons. If it is to have its charge removed, then it will have to lose its excess electrons. Once the excess electrons are removed from the object, there will be equal numbers of protons and electrons within the object and it will have a balance of charge.
Why is static electricity considered a charge and not a current?
Why is static electricity considered to be a charge and not a current ? Because static electricity means not moving. And current moves therefore it’s a charge.
Why does static electricity build up on insulators?
Static charge only builds up on insulators. These are materials that will not allow the flow of charged particles (nearly always electrons) through them. Insulators are materials made from atoms that hold onto their electrons very strongly. On insulators, the charge can’t spread out – so you get a noticeable effect.
How can static charge build up on an object?
Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged. The rubbing of certain materials against one another can transfer negative charges, or electrons.
Why do insulators prevent electric shocks?
Insulators keep electricity from leaving power lines. Rubber or plastic insulation around the cords keeps the electricity in the wires and prevents you from getting a shock. If this insulation is broken or wears off, the electricity can come through and shock you.
What is the best conductor of static electricity?
Materials that do allow their electrons to move through them easily are called conductors. Cloth is a good insulator, while metals generally are good conductors.
How do you generate static current?
Static electricity can be created by rubbing one object against another object. This is because the rubbing releases negative charges, called electrons, which can build up on one object to produce a static charge.
What is common between current and static electricity?
Static electricity is uncontrolled electrons passing from one body to another in sudden, momentary movements. Current electricity is when the electrons are controlled by moving along a path together. The path is usually a conductor of electricity.
What materials can hold a static charge?
| Materials that gain a negative (−) electrical charge (Tend to attract electrons) | |
|---|---|
| Wood | Attracts some electrons, but is almost neutral |
| Hard rubber | Some combs are made of hard rubber |
| Nickel, Copper | Copper brushes used in Wimshurst electrostatic generator |
| Brass, Silver | |
Is 100 cotton anti static?
In the past, the majority of protective clothing used in the field of ESD was 100% cotton. As with all natural fibres, this offers the advantage of being subject to only minimal antistatic build-up without the use of additional equipment. Cotton also poses a hazard in that its staple fibres can come loose.
How does plastic get static charge?
Steps: Rub the surface of the rod with the cloth for 40 seconds. Flatten the plastic bag and rub the cloth against its surface for 40 seconds. Release the plastic bag and watch it levitate as you wave the rod below.
What happens when you touch a metal doorknob after rubbing your shoes on the carpet?
Friction between your shoe and the wool causes a transfer of electrons from the carpet to you. Your body now has a static charge. When you touch the metal knob, electrons suddenly move from your body through your fingertips to the metal doorknob as a static discharge. What is the law of conservation of charge?
What happens when you touch a metal doorknob?
When you touch a doorknob (or something else made of metal), which has a positive charge with few electrons, the extra electrons want to jump from you to the knob. Static electricity happens more often during the colder seasons because the air is drier, and it’s easier to build up electrons on the skin’s surface.