HELP PLEAS 5TH GRADE SCIENCE A scientist studying the Milky Way galaxy notices a bright light in the sky. What information would she need to prove that the object is a comet and not a star? Does the object move?

Is there gas in the object?

How big is the object?

Are there other objects orbiting it?

II only

III only

I and II

I and III

The answer is 323 g.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

You would do 1500/4 and the answer is 375

Ok so co(g) is not pronoused that. the only clue is that youpronouse it the oppisote way.