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3 years ago

Please list about 10 facts about viscosity

1 answer:

5 0

Viscosity is the thickness of a liquid, cause by the friction between the molecules in that liquid. A very high viscosity would result in a solid form and low would be a liquid. If a liquid as zero viscosity is only found in superfluids at there freezing points or lower. There are also two types of viscosity “dynamic” (which is measure in seconds, pascal seconds to be exact) and “kinematic” (which is measured in metre per second squared)

Fun fact they use viscosity to predict when volcanoes are going to erupt:)

Hope this helps I love sciencey stuff so if you need anymore help let me know!

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The specific heats and densities of several materials are given below:

krek1111 [17]

<u>Answer:</u> The change in temperature is 84.7°C

<u>Explanation:</u>

To calculate the change in temperature, we use the equation:

$q=mc\Delta T$

where,

q = heat absorbed = 1 kCal = 1000 Cal (Conversion factor: 1 kCal = 1000 Cal)

m = mass of steel = 100 g

c = specific heat capacity of steel = 0.118 Cal/g.°C

$\Delta T$ = change in temperature = ?

Putting values in above equation, we get:

$1000Cal=100g\times 0.118Cal/g.^oC\times \Delta T\\\\\Delta T=\frac{1000}{100\times 0.118}=84.7^oC$

Hence, the change in temperature is 84.7°C

6 0

3 years ago

In your own words, describe how the energy of a pendulum is changed as it moves through one cycle of its motion. Pls help online

ruslelena [56]

In a perfect world without air resistance, the top of the swing would have the most potential energy, but the least amount of kinetic energy. As the pendulum falls down, it gains more kinetic energy as it travels faster due to gravitational acceleration but loses more potential energy as it loses height. The total amount of energy in the system (the sum of kinetic and potential energy) stays the same.

3 0

4 years ago

How to tell which element is oxidized in a reaction?

adoni [48]

If in a redox reaction oxidation state of elements decreases or looses electron(s), the element is said to be oxidized. Hope this helps you!

4 0

3 years ago

Given the reaction:<br> C2H2 + 2H2 → C2H6<br> This reaction represents

jeyben [28]

<h2>Given reaction: </h2><h2>C2H2 + 2H2 → C2H6 </h2><h2>This reaction represents: Combination reaction </h2>

Explanation:

When two or more substances react and form some new substance it is called as chemical reaction .

A + B --> C + D

(reactants ) (products )

Types of chemical reaction

we come across different types of reactions that occur in nature .

Out of them , combination is also one type

Combination reaction

It is a reaction ,when two or more reactants react to form single product .

i.e A+B-----AB(IN THIS ONE SINGLE PRODUCT IS FORMED )

This reaction can be between element element , element compound or compound compound .

LIKE : H₂+Cl₂------HCL

(E) (E) (PRODUCT )

SO₂+O₂----SO₃

CO₂+H₂O----H₂CO₃

In the above asked equation :

C₂H₂ + 2 H₂ --> C₂H₆

The ethane is formed by combination reaction
This reaction obeys law of conservation of mass as it is balanced .

3 0

3 years ago

Explain the relationship between the number of daylight hours and season. (full sentence)

Elis [28]

Answer:The tilt of the Earth's axis also defines the length of daylight. Daylight hours are shortest in each hemisphere's winter. Between summer and winter solstice, the number of daylight hours decreases, and the rate of decrease is larger the higher the latitude. The fewer sunlight hours the colder the nights

Explanation: That's a answer for you.

6 0

3 years ago