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3 years ago

Which of the following devices is based on the property of thermal expansion?

2 answers:

6 0

D. thermometer. The warmer it gets, the more energy the particles gain and the more they move and 'expand', rising up the thermometer.

borishaifa [10]3 years ago

5 0

The correct answer to the question is : D) Thermometre

EXPLANATION:

Thermometre is the device used for measuring the temperature of any substance.

Thermal expansion is the process in which the substance will expand when heat is given to that substance. Thermometre is based on the property of thermal expansion.

Generally, the substance that is used in thermometre is mercury. It expands at a fast rate when a little bit of heat is given to the thermometre.

When the thermometre is connected to any body, the heat will flow from body at high temperature to thermometre. The mercury level rises in the thermometre tube which gives the temperature of that substance under consideration.

Hence, it is the thermometre which is based on thermal expansion.

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How many grams are in 6.53 moles of Mn?

Westkost [7]

Answer:

359 g Mn

General Formulas and Concepts:

Dimensional Analysis
Reading the Periodic Table of Elements

Explanation:

Step 1: Define

6.53 mol Mn

Step 2: Find conversion

1 mol Mn = 54.94 g Mn

Step 3: Dimensional Analysis

$6.53 \hspace{3} mol \hspace{3} Mn(\frac{54.94 \hspace{3} g \hspace{3} Mn}{1 \hspace{3} mol \hspace{3} Mn} )$ = 358.758 g Mn

Step 4: Simplify

We are given 3 sig figs.

358.758 g Mn ≈ 359 g Mn

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3 years ago

Why does th ground and atmosphere get warm during the day

Tcecarenko [31]

Answer:

The Greenhouse Effect Revisited. When solar energy strikes the planet during the day, the ground, highways and other objects get hot and absorb that energy. As the sun goes down, the Earth cools by giving off infrared radiation. Because greenhouse gases absorb part of this radiation, the atmosphere warms and keeps the Earth from getting too cold.

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4 years ago

what do you think is the purpose of a periscope? Are there any other uses for periscopes besides for submarines?

spin [16.1K]

Military personnel also use periscopes in some gun turrets and in armoured vehicles. More complex periscopes using prisms or advanced fibre optics instead of mirrors and providing magnification operate on submarines and in various fields of science

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3 years ago

True or False. 1. Electromagnetic radiation comes from nature such as deep within the Earth.

Dahasolnce [82]

Answer:

yes

Explanation:

the mantle rotates around the iron core and creates a charge. that charges radiates outward as the magnetosphere

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3 years ago

1. A car’s velocity increases from 4.0 m/s to 36 m/s over a 4.0 second time interval. What is its average acceleration?

Finger [1]

Explanation:

36-4/4= 9 m/squared. meter per squared.

acceleration unit is meter per second Square.equation is velocity by time.for average final(36) minus initial(4)

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3 years ago