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
Mass is the amount of matter in an object. Mass remains unaffected by gravity. Weight is a measure of the gravitational pull on an object and is therefore affected by gravity.
Your magnetic compass does not actually point north, it merely aligns itself with the lines of magnetic force at your location. These do not necessarily point to the North - they may differ by some tens of degrees. This difference is the Magnetic Declination. On hikers maps, you'll find that the true north of the map is shown as well as the magnetic declination at that region. The declination itself changes slowly, too slow for you to bother with its changing.
Newtonian physics, also called classical or pre-relativistic physics refer to the physics after Aristotelian physics and before the 1920s when the theory of relativity was formed. They distinctly differ from Aristotelian physics in that they cover the physics of motion, scientific method, describe contact and non-contact forces such as magnetism
How does ethnography differ from ethnology?
posters are not peer reviewed.
magnetic fields are induced by flowing current or stationary charges, while gravitation fields are induced by bodies of mass as opposed to charge. ok? you got the answer now
how do colors differ?
carpet is hard and does not have friction
Friction produces heat. The other forces produce motion or stress.
They are different because static means "not in motion" and kinetic means "in motion". Kinetic friction means friction that is moving and static friction means friction that is not moving.
density and gravitational pull
That They Are Different. [:
Electronic forces mainly differ from gravitational forces by being also repulsive while gravitational forces are only attractive.
Static friction is a force that must be overcome to start motion. Kinetic friction is the force that must be overcomne during motion or the motion stops.
yes, tides would differ because of the difference in gravitational pull that would be created due to mars.
The magnetic fields are not aligned with the rotational axis of the planet and they are not located at the center of the planet.
friction is a eorce of contact between two surfaces which opposes motion of objects over one another. In rolling friction the area in contact between two objects is comparatively less then that in case of sliding as in rolling, one object just roll over each other hence area of contact is less so force of rolling friction is less than sliding friction.