A permanent magnet (in contrast to an electromagnet).
The phenomena of sending back of light is called reflection of light. And the surfaces which reflects light back are called reflecting surfaces.
The roughness of the two objects coming in contact determines the degree of friction.
They could if they were a source of it. Say if you heated a shiny steel pan in the oven. However shiny objects typically reflect IR better that emitting it. Dark objects are better at absorbing and emitting IR.
The types of materials involved, any third party (like sand or grease), the surface finish of the two objects where they contact, the temperature of the interfacing surfaces, and the normal force.
Objects move on different surfaces by friction.
Objects move on different surfaces by friction.
What kind of surfaces will form images of objects?
a building in which objects of permanent interest are preserved and exhibited is called a building in which objects of permanent interest are preserved and exhibited is called a building in which objects of permanent interest are preserved and exhibited is called
Objects move on different surfaces by friction.
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