One group of students is investigating the properties of charged objects. their observations are listed below.
when two positively charged objects are brought close to each other, they push each other away.
when two negatively charged objects are brought close to each other, they push each other away.
when a positively charged object is brought close to a negatively charged object, they pull toward each other.
the experiment was repeated by several students using different charged objects. the results were the same. based on the investigations, which of these theories would the students most likely propose?
a. similar charges attract
b. similar charges repel
c. positive charges attract all charges
d. negative charges attract all charges

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2