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Trava [24]
3 years ago
15

An astronomer discovers a new galaxy using a telescope. The astronomer wants to investigate how the galaxy is moving relative to

the Milky Way galaxy.
In one or two sentences, make a hypothesis about the movement of the galaxy and explain at least one way to test the hypothesis.
Physics
1 answer:
belka [17]3 years ago
5 0

No matter what, if you’re in an already existing galaxy, any galaxy outside of your existing territory will be moving away from yours.

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Answer:

The resultant strain in the aluminum specimen is 4.14 \times {10^{ - 3}}

Explanation:

Given that,

Dimension of specimen of aluminium, 9.5 mm × 12.9 mm

Area of cross section of aluminium specimen,

A=9.5\times 12.9=123.84\times 10^{-6}\ mm^2A=122.55\times 10^{-6}\ m^2

Tension acting on object, T = 35000 N

The elastic modulus for aluminum is,E=69\ GPa=69\times 10^9\ Pa

The stress acting on material is proportional to the strain. Its formula is given by :

\epsilon=\dfrac{\sigma}{E}

\sigma is the stress

\epsilon=\dfrac{F}{EA}\\\epsilon=\dfrac{35000}{69\times 10^9\times 122.5\times 10^{-6}}\\\epsilon=4.14\times 10^{-3}

Thus, The resultant strain in the aluminum specimen is 4.14 \times {10^{ - 3}}

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