What is the difference between a contact force and a field force?
1 answer:
Answer:
A contact force requires two objects to be touching, a field force works at a distance
Explanation:
- A contact force is a force that requires the two objects to be touching. An example of contact force is the frictional force: in fact, frictional force only occurs if the surfaces of the two objects involved touch each other, otherwise it is not present.
- A field force is a force that acts on a distance, i.e. the objects involved do not need to touch. Examples of field force are the gravitational force and the electric force: in fact, an object with mass experiences a force of gravity when it is near a planet, but this force is present also when the object is not touching the planet. Similarly, electric charges experience an electric force when they are close to other electri charges, even when they are separated by a certain distance r. For this non-contact forces, we use the concept of field to identify the region of space in which an object experiences that force.
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Answer:
Explanation:
given,
86 out of every 100 TV households have at least one remote control
Probability of any material is calculated by.
now, Calculating probability that at least one remote control
q = 1 - 0.86
q = 0.14
Answer:
The door will move when the forces exerted by each individual becomes unbalanced.
Explanation:
The Door will only move when the forces exerted by each of the individual is unbalanced i.e. when the Torque is unbalanced
This is because there will only be a reaction or movement of an object when the applied force > resistant force acting on the object.
example : An object at rest will only move when the applied force is greater than the frictional forces acting on the object at rest.
