SI will always be in metric, so the answer is D. Meter.
I see you're in Middle School, so I've got a hunch that they want you
to say "the dresser because it has more mass". But that's a poor
answer, to a poor question.
The fact is that there's no way to tell.
The force it takes to move either object across the floor does NOT really
depend on just its mass. It depends on both the object's mass AND the
friction between the object and the floor. And THAT depends on the shape
of the feet where they touch the floor, and what kind of material the feet and
the floor are made of.
So it seems to me that we really don't have enough information to answer
the question with.
But again, I suspect that the answer they want is "the dresser because
it has more mass".
The moon is thought to have an iron-rich core whose radius
is 330 km, plus or minus an uncertainty of 20 km.
That puts its diameter in the range of 620 km to 700 km.
Answer:
D) negative, due to extra electrons.
Explanation:
The charge that would be gained will be negative charges due to extra electrons.
Electrons are usually lost or gained by bodies that comes in contact with one another.
They occupy the orbital space in an atom and are not strongly held by forces within the atom.
Protons cannot be lost in such manner. They occupy the nucleus and are bounded by strong chemical forces within it.
The polythene and rods are both made up of chemical substances whose units called atoms are made up of subatomic particles of protons, neutrons and electrons. As with all kinds of matter, there would be pool of free electrons round them that can easily be rubbed off due to the weak attractive forces binding them in the atomic sphere.
When the polythene and rods are rubbed, there would be a loss of electrons and the gaining body, polythene becomes negatively charged.
Answer: 20 minutes
Explanation: omm its 20 minutes
