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Answers
Answer:
1: Magnetism is an example of a non-contact or action-at-a-distance force. These are forces which can act on an object without being in physical contact with it. The force of gravity is another example. Thus, gravity will pull a raindrop down to Earth without any tangible physical link between the Earth and the drop.
2: If two forces act on an object in different directions, then the effect on the body will be due to the magnitude and direction of the net force acting on it
3:no a single isolated force can never exist in the nature because then it'll be violation of newtons third law of motion.
4:Pressure is the amount of force applied at right angles to the surface of an object per unit area. The symbol for it is p or P. The IUPAC recommendation for pressure is a lower-case
5:false
because it will turn only when the wind pushes the wind mill in a perticular direction
6:because pressure=force/ area.
pointed tool have small area therefore it exert more pressuer on the surface
7:The newton is the SI unit of force, and is the force which will accelerate one kilogram one metre per second squared. ... The symbol of the newton in SI is N. The newton is also the unit of weight
8:This envelope of air is known as the atmosphere and pressure exerted by atmospheric air is called atmospheric pressure.