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stepan [7]
3 years ago
11

55 Points ££which state of matter can undergo three types of thermal expansion​

Physics
2 answers:
bija089 [108]3 years ago
7 0

Answer:

The three types of thermal expansions are Linear expansion , Superficial expansion and Cubical expansion

CaHeK987 [17]3 years ago
5 0

<em>In</em><em> </em><em>my</em><em> </em><em>knowledge</em><em> </em>

<em>Y</em><em>o</em><em>u</em><em>r</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>Gases</em>

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1. Find the kinetic energy of a .023 kg bullet moving at 420 m/s.
love history [14]

Answer:

Correct answer: Ek = 2,028.6 J

Explanation:

Ek = m v²/2 = 0.023 · 220² = 0.023 · 176,400/2 = 2,028.6 J

God is with you!!!

8 0
3 years ago
Which is not an issue with waste from nuclear energy?
Sergeeva-Olga [200]

Answer:

A) atmospheric pollutants. Nuclear power plants do not produce air pollution as carbon dioxide, sulfur dioxide.

Hope this helps!

3 0
3 years ago
A solid ball is released from rest and slides down a hillside that slopes downward at 65.0" from the horizontal
PilotLPTM [1.2K]
Setting reference frame so that the x axis is along the incline and y is perpendicular to the incline 
<span>X: mgsin65 - F = mAx </span>
<span>Y: N - mgcos65 = 0 (N is the normal force on the incline) N = mgcos65 (which we knew) </span>
<span>Moment about center of mass: </span>
<span>Fr = Iα </span>
<span>Now Ax = rα </span>
<span>and F = umgcos65 </span>
<span>mgsin65 - umgcos65 = mrα -------------> gsin65 - ugcos65 = rα (this is the X equation m's cancel) </span>
<span>umgcos65(r) = 0.4mr^2(α) -----------> ugcos65(r) = 0.4r(rα) (This is the moment equation m's cancel) </span>
<span>ugcos65(r) = 0.4r(gsin65 - ugcos65) ( moment equation subbing in X equation for rα) </span>
<span>ugcos65 = 0.4(gsin65 - ugcos65) </span>
<span>1.4ugcos65 = 0.4gsin65 </span>
<span>1.4ucos65 = 0.4sin65 </span>
<span>u = 0.4sin65/1.4cos65 </span>
<span>u = 0.613 </span>
3 0
3 years ago
A 2-kg toy car accelerates from 0 to 5 m/s2. It
yan [13]
10 joules of work is done by the object
8 0
3 years ago
A compound has a melting point of 812°C. what type of bonding is in the compound?
AURORKA [14]

Answer:

Ionic compound.

Explanation:

812° C is a very high melting point. Such high melting points are generally ionic compound. Ionic compounds are have very strong bond between the elements ( electrostatic bond). In order to break this bond, large amount of heat energies are needed. So, they have high melting point. Also, Ionic compound are very good conductors of electricity.

7 0
3 years ago
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