Answer:
True
Explanation:
Because they are central to the human experience and are related to everything we do .
your answer would be The one in the top right corner that looks a bit like this..
The correct answer is helium nucleus. An alpha particle has a two neutrons and protons that formed together into a particle which also happens to be very identical to the helium nucleus. However, the helium particles that are being produced by particle accelerator are less to be referred as an alpha particle.
Gravitational potential energy above a reference level is M G H .
In this story,
-- M = 25kg
-- H = 15m
and if the story takes place on Earth, then
-- G = about 9.8m/s².
PE = (M) (G) (H) = (25) (15) (9.8) = <em>3,675 joules</em> .
That's the gravitational potential energy acquired by the suitcase
in the process of being lifted 15 meters straight up.
Sadly, human physical effort is far from 100% efficient, and the woman in
the story has to expend a lot more energy than that just to lift the suitcase
up the stairs. AND PLUS don't forget that she also has to come up with
enough additional energy to increase the potential energy of <em>her own</em> mass,
no matter how dainty it may be, by 15 vertical meters' worth.
Now 25 kg = about 55 pounds,
and 15 meters = about 50 feet, or something like 4 to 5 stories
You can be sure that some beads of glow highlight her forehead
by the time she's done with this job.
