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3 years ago

What causes thermal expnsion?

Physics

2 answers:

VLD [36.1K]3 years ago

4 0

Answer:

Thermal expansion occurs when an object expands and becomes larger due to a change in that specific object's temperature. Temperature is the average kinetic (basically movement) energy of the molecules in a substance. A higher temperature means that the molecules are moving faster on average.

Dmitry_Shevchenko [17]3 years ago

4 0

Answer: Thermal expansion occurs when an object expands and becomes larger.

Explanation: This occurs when a change ( increase or decrease )

Forms in an objects temperature

For example, Increase in size of a material due to added heat.

Decrease in size of material when heat is removed.

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1. Which of the following are quantitative observations? (Select all that apply) a) The sky is blue b) The toy car is about 3 in

iren2701 [21]

Answer: las respuestas correctas son b, c y d.

indican cantidad

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3 years ago

A mixture of nitrogen and water vapor at 200oF, 1 atm has the molar analysis of 80% N2, 20% water vapor.a) If the mixture is coo

Illusion [34]

Answer:

$p_g = 57.64 lb/in^2$

Explanation:

Given data:

temperature of water vapor is 200 degree F

pressure is 1 atm

\from the standard water temperature tables , at temperature 200 degree F

$p_{sat} = 11.538 psia$

$\omega_1 = \frac{0.622 \times 0.2 \times 11.538}{14.7 - (0.2\times 11.538)}$

$\omega_1 = 0.115$

at temp 200 degree F and $\omega _1 = 0.115$

$\phi = 0.255$

so relative humidity is given as

$\phi = \frac{p_v}{p_g}$

$0.255 = \frac{14.7}{p_g}$

$p_g = 57.64 lb/in^2$

6 0

4 years ago

Relative speed depends on the individual speeds and

Alecsey [184]

A. direction

The two factors that relative speed overall depends on are individual speed and direction.

5 0

3 years ago

Zinc metal (Zn) and sulfur powder (s) undergo a chemical reaction to form zinc sulfide (ZnS) which equation represents this chem

dexar [7]

Zinc metal (Zn) reacts with sulfur (S) to create zinc sulfide (ZnS), and the chemical reaction is: Zn (s) + S (s) = ZnS (s).

Importance of Zinc (Zn) and sulfur (S):

Zinc(Zn) is a vital element that our systems need to absorb food and nutrients as well as create healthy skin and bones. Zinc(Zn) ions play a crucial role in a number of the body's enzymes.
Sulfur(S) is a pale yellow, tasteless, brittle solid that is also necessary for life. It is found in many proteins as well as the amino acids cysteine and methionine. It is a trace element found in bone minerals, bodily fluids, and lipids.

Chemical reaction -

In this experiment, heating a zinc(Zn) and sulfur(S) combination causes an interesting chemical reaction. A blinding flash of light, hot sparks, a hissing sound, and a cloud of white smoke in the shape of a mushroom are produced.

Therefore, the following chemical processes are taking place in the reaction: Zn (s) + S (s) = ZnS (s).

Learn more about Zinc(Zn) here:

brainly.com/question/13890062

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8 0

2 years ago

Explain quantum zeno effect in one sentence

otez555 [7]

It’s a feature of quantum-mechanical systems allowing a particle's time evolution to be arrested by measuring it frequently enough with respect to some chosen measurement setting.

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3 years ago