Answer:
The second option - the papers are acted upon by an unbalanced force from the fan.
Explanation:
Answer:
The value is
Explanation:
From the question we are told that
The value of the far point is
The distance of the lens to the eye is
Generally
Generally the power spectacle lens needed is mathematically represented as
Here is the object distance which for a near sighted person is
And is the image distance which is evaluated as
=>
=>
So
=>
=>
Answer:
ANGLE is 35.3 degree celcius
Explanation:
Given data:
mass m and 3m
initial speed Vi
particle with mass m is moving toward left while particle with mass 3m is moving toward right
By using conservation of momentum :
conservation of energy :
After collision, particle with mass m moves at right angles, thus by considering conservation of momentum in x & y direction,
x direction :
y direction :
subsitute these value in energy conservation
35.3 degree from x-axis
The galaxies are so far from the Earth, and their spectra so extremely
red-shifted, that I'm not able to see any of the items on the list.
Estimates of the Hubble constant still cover a wide range.
Let's assume that it's 70 km/sec per megaparsec, or
about 21.5 km/sec per million light years.
With that factoid, the speed of recession of each galaxy on your
invisible list is roughly
(21.5 km/sec) x (distance to the galaxy) / (1 million light years) .
You'll find ... if it's important enough to you for you to carry out the work ...
that the farthest galaxy is the fastest, the nearest one is the slowest,
and the others fall similarly in line.
In other words:
No matter where we look in the universe, and no matter
in what direction we look, we observe that:
-- all distant galaxies are moving away from us
and
-- the farther a galaxy already is from us, the faster
it's moving away from us.
This observation could have been enough to give us
a giant inferiority complex, or to cause us to go brush
our teeth and rub on some deodorant.