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galina1969 [7]
3 years ago
11

The linear expansion of a material depends on which of the following?

Physics
1 answer:
nordsb [41]3 years ago
7 0

Answer:

1. The change in temperature of the material.

2. The length of the material.

3. The type of material.

Explanation:

The term linear expansion is defined as the increase in length of any conductor when there is a change in temperature. The new length of any wire or rod is given by :

L=L_o(1+\alpha \Delta T)

L_o is the initial length of the rod

\alpha is the coefficient of linear expansion

\Delta T is the change in temperature

It is clear that the linear expansion of a material depends on :

1. The change in temperature of the material.

2. The length of the material.

3. The type of material.

So, all options are correct.

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Gamma ray technology can be used to do which of the following?
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Answer:

b

Explanation:

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5 0
2 years ago
Please please help i have to turn in
larisa [96]
Hi,

I've found a link that should assist you or answer your question.
http://click.dji.com/ANbvbbP7bwUWtSACp6U_?pm=link&as=0004

Have a nice day!
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3 years ago
The initial and final velocities of two blocks experiencing constant acceleration are respectively −7.45 m/s and 14.9 m/s. (a) T
ikadub [295]

Answer:

a) a_{1}=3.7 m/s^{2}

b) a_{2}=3.68 m/s^{2}

Explanation:

a) The displacement of the first object is 22.5 m, so we can use the next equation:

v_{f}^{2}=v_{i}^{2}+2a\Delta x

a=\frac{v_{f}^{2}-v_{i}^{2}}{2x}

a=\frac{14.9^{2}-(-7.45)^{2}}{2*22.5}

a_{1}=3.7 m/s^{2}

positive acceleration.

b) Using the same equation we can find the second value of the acceleration:

a=\frac{v_{f}^{2}-v_{i}^{2}}{2x}

a=\frac{14.9^{2}-(-7.45)^{2}}{2*22.6}

a_{2}=3.68 m/s^{2}

positive acceleration.

I hope it helps you!

8 0
3 years ago
How much work was done on a 45 kg weight when lifted 1.4 meters in the air?
BabaBlast [244]

Explanation:

w = f x d

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Which of the following is an example of sound energy
dedylja [7]
Sound energy is produced when an object vibrates so an example would be a telephone ringing or someone playing a bass guitar 
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