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horsena [70]
3 years ago
14

How do astronomers best learn about distant objects in the universe

Physics
2 answers:
3241004551 [841]3 years ago
7 0
The answer will be C based on what I had researched
Brilliant_brown [7]3 years ago
5 0

They collect and analyze data from the objects' electromagnetic radiation.

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Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is comple
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Answer:

Answer to the above question is given as follows:

(1) Forward

(2) Increases

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Explanation:

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Which phenomenon occurs when a wave encounters a non–transmitting barrier
SpyIntel [72]

Answer:

Absorption

Explanation:

A non-transmitting barrier would not allow a wave to go through. When a wave is unable to pass through a barrier, it is not transmitted and can get absorbed or reflected back. The wave can also try to go round the barrier.

Most likely, the wave gets absorbed by the barrier and it stops it.

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A thin, light wire 75.2 cm long having a circular cross section 0.560 mm in diameter has a 25.2 kg weight attached to it, causin
blsea [12.9K]

Answer:

The stress is calculated as 1.003\times 10^{9}\ Pa

Solution:

As per the question:

Length of the wire, l = 75.2 cm = 0.752 m

Diameter of the circular cross-section, d = 0.560 mm = 0.560\times 10^{- 3}\ m

Mass of the weight attached, m = 25.2 kg

Elongation in the wire, \Delta l = 1.10\ mm = 1.10\times 10^{- 3}\ m

Now,

The stress in the wire is given by:

Stress,\ \sigma = \frac{Force,\ F}{Area,\ A}          (1)

Now,

Force is due to the weight of the attached weight:

F = mg = 25.2\times 9.8 = 246.96\ N

Cross  sectional Area, A = \pi (\frac{d}{2})^{2} = \pi (\frac{0.560\times 10^{- 3}}{2})^{2} = 2.46\times 10^{- 7}\ m^{2}

Using these values in eqn (1):

\sigma = \frac{246.96}{2.46\times 10^{- 7}} = 1.003\times 10^{9}\ Pa  

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2 years ago
What is the concentration of H+ ions at a pH = 2
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If two people are running at the same speed in the same direction. One person is one meter ahead of the other. The person in fro
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Answer:yes

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