Calculate sliding friction a box being pushed with a force of 85 n

The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. this simple process iswhich kind of a change? a.a physical changeb. a chemical changec. a nuclear changed. an ionic change

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

Which of the following is not am example of a polymer? protein nylon kevlar concreta