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Firlakuza [10]
3 years ago
11

the light from andromeda galaxy takes about 2.6 million years to reach earth. which of these statements is correct about the and

romeda galaxy? a. it is located at a distance of 2.6 million light years from earth. b. it has to travel a distance of 2.6 million kilometers to reach earth. c. it can be photographed by a space telescope in 2.6 million years. d. it has to move at the rate of 2.6 million kilometers per hour to reach earth.
Physics
1 answer:
-Dominant- [34]3 years ago
7 0
A. it is <span>located at a distance of 2.6 million light years from earth</span>
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Parallel universe, or alternate reality, is a hypothetical self-contained plane of existence, co-existing with one's own

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What are the similarities and differences between meiosis and mitosis?
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A uniform disk is constrained to rotate about an axis passing through its center and perpendicular to the plane of the disk. If
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Answer:

442.5 rad

Explanation:

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α = Constant angular acceleration = 3.0 rad/s²

t = time period of rotation of the disk = 15 s

θ = angular displacement of the point on the rim

Angular displacement of the point on the rim is given as

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2 years ago
A ball is fixed to the end of a string, which is attached to the ceiling at point P. As the drawing shows, the ball is projected
Ganezh [65]

Answer:

The ball's initial kinetic energy

The ball comes to a stop at B. At this point its initial kinetic energy is converted into potential energy

Explanation:

A ball is fixed to the end of a string, which is attached to the ceiling at point P. As the drawing shows, the ball is projected downward at A with the launch speed v0. Traveling on a circular path, the ball comes to a halt at point B. What enables the ball to reach point B, which is above point A? Ignore friction and air resistance.

From conservation of energy which states that energy can neither be created nor be destroyed, but can be transformed from one form to another.

Ki+Ui=Kf+Uf

Ki=initial kinetic energy

Ui=initial potential energy

Kf=final kinetic energy

Uf=final potential energy

we know that \frac{1}{2} mu^{2} +mgha=\frac{1}{2} mv^{2} +mghb

m=mass of the ball

ha=downward height a

hb=upward height b

u=initial velocity u

v=final velocity v, which is 0

g=acceleration due to gravity

v=0 at final velocity

1/2mu^2+mgha=0+1/2mv^2

ha=hb+Ki/mh

From the above equation, we can conclude that the ball's initial kinetic energy  is responsible for making the ball reach point B.

Point B is higher than point A from the motion gained by the ball

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