<span>There are several ways this condition can be caused:
</span>One way is by rubbing certain materials together or pulling them apart. Another way that static electricity commonly seen is when a charged material is brought near a neutral material. This is called electrostatic induction. You can also cause static electric separation of charges by using pressure in certain materials or using heat in other materials.
Answer:
》How can a camera help someone see something he or she wouldn't normally be able to see?
- Although the human eye is able to observe fast events as they happen, it is not able to focus on a single point of time. We cannot freeze motion with our eyes. With a camera, however, so long as there is enough light, we can freeze motion. ... The camera can capture 'the moment', while your eye cannot.
》In what way is laser different from light produced by other sources?
-The major difference between laser light and light generated by white light sources (such as a light bulb) is that laser light is monochromatic, directional and coherent. ... Light from a conventional sources, such as a light bulb diverges, spreading in all directions.
P = mv
p = (1600kg)(20m/s)
p = 32000 N
(3.2x10^4 N)