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How can a magnet move something without touching it?
Electromagntic waves/ forces
What objects are similar because they are both areas where forces can act without objects touching?
electric current
What electric charges do not need to be touching to exert forces on each other?
static electricity
What is the force that one object exerts on other when they are not touching?
Gravity is one. However, magnetic and electrostatic forces are also possible.
Are gravity and magnetism examples of contact forces?
They're both great examples of NON-contact forces. Two objects do NOT needto be touching in order to be affected by gravitational or magnetic forces.
How can a magnet move something without touching it?
Electromagntic waves/ forces
What CF is the name for forces where things have to be touching to have an affect?
It is changing force
What cf is the name of forces where things have to be touching to have an effect?
i dont know
What are forces between two moving objects that are touching?
Friction force. [opposite force]
What is a metal that can attract other materials without touching them?
Iron, Nickel and cobalt are attracted to magnets, these are field forces because they act on an object without touching it
What is the action and reaction forces when touching you finger to your nose?
There are two forces involved; the finger pushes against the nose, and the nose pushes against the finger.
How do contact forces such as friction differ from gravitational and magnetic forces?
Contact forces must be touching whatever they are acting on the others have a field of influence around them; ie they don't have to touch to act on something
What are the forces on an airplane taking off?
The forces acting on an aircraft at any given point in time are lift, drag, thrust and weight. I would add that there are Friction forces if the aircraft is still touching the runway.
What objects are similar because they are both areas where forces can act without objects touching?
electric current
What electric charges do not need to be touching to exert forces on each other?
static electricity
What is the force that one object exerts on other when they are not touching?
Gravity is one. However, magnetic and electrostatic forces are also possible.
3. Some forces act at a distance and thus do not require .?
Force is split into 2 different "types" contact forces act between 2 objects that are TOUCHING, non-contact forces act as a distance and are not contacting. So the answer would be contact.
