Answer:
length f′0 when the eye is presbyopic and by a screen (the retina) at the distance d from the
Explanation:
Answer:
1.) The current is doubled
2.) moving a magnet up and down near the wire
3.) An electric current in the wire produces a magnetic field.
4.) Distance between Particles (m)
Explanation:
1.) When 6 V battery is connected to a 24 ohm resistor to create a circuit, using ohms law, V = IR
Current I = 6/24 = 0.25 A
When the The 6 V battery is replaced with a 12 V battery,
Current I = 12/24 = 0.5 A
Therefore, The current is doubled
2.) Electric current will be induced when moving a magnet up and down near the wire
3.) An electric current in the wire produces a magnetic field.
4.) Distance between Particles (m)
The force of attraction between two different masses is inversely proportional to the square of the distance between them.
W = ∫ (x from 0.1 to +oo) F dx
= ∫ (x from 0.1 to +oo) A e^(-kx) dx
= A/k x [ - e^(-kx) ](between 0.1 and +oo)
= A/k x [ 0 + e^(-k * 0.1) ]
<span>
= A/k x e^(-k/10) </span>
Actually, they're not. There's a group of stars and constellations arranged
around the pole of the sky that's visible at any time of any dark, clear night,
all year around. And any star or constellation in the rest of the sky is visible
for roughly 11 out of every 12 months ... at SOME time of the night.
Constellations appear to change drastically from one season to the next,
and even from one month to the next, only if you do your stargazing around
the same time every night.
Why does the night sky change at various times of the year ? Here's how to
think about it:
The Earth spins once a day. You spin along with the Earth, and your clock is
built to follow the sun . "Noon" is the time when the sun is directly over your
head, and "Midnight" is the time when the sun is directly beneath your feet.
Let's say that you go out and look at the stars tonight at midnight, when you're
facing directly away from the sun.
In 6 months from now, when you and the Earth are halfway around on the other
side of the sun, where are those same stars ? Now they're straight in the
direction of the sun. So they're directly overhead at Noon, not at Midnight.
THAT's why stars and constellations appear to be in a different part of the sky,
at the same time of night on different dates.
Today we can make observations that would lead us to the same conclusion as newton. If you throw a baseball in the air, it always comes back down. This is because of gravity. duh.
