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EastWind [94]
2 years ago
14

Prove the following:V=U + AT​

Chemistry
1 answer:
pychu [463]2 years ago
6 0

We know that,

acceleration (a) = final velocity(V)-initial velocity(U)/ Time taken(T)

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NEED HELP ASAP LAST QUESTION CANT GET WRONG !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
yaroslaw [1]

A local community needs to provide more electricity for its growing population. Currently, the community's electricity needs are met by coal-burning power plants several kilometres away. Citizens are concerned that burning more coal will produce too much air pollution.

Which of the following could be used as an alternative energy resource to help minimise air pollution in this community?

A.  hydroelectric energy

B.  solar energy

C.  wind energy

<u>D.   all of these </u>

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8 0
3 years ago
A sample of iron with a mass of 200g releases 9840 cal when it freezes at it’s freezing point. What is the molar heat of fusion
antoniya [11.8K]

Answer:-

2747.7 Cal mol -1

Explanation:-

Molar heat of Fusion is defined as the amount of heat necessary to melt (or freeze) 1 mole of a substance at its melting point.

Atomic mass of Iron = 55.845 g mol-1

Mass of Iron = 200 g

Number of moles of Iron = 200 g / (55.845 g mol-)

= 3.581 moles

Heat released = 9840 Cal

Molar heat of Fusion = Heat released / Number of moles

= 9840 Cal / 3.581 moles

= 2747.7 Cal mol -1

8 0
2 years ago
Read 2 more answers
A strong magnet that can be turned on and off is called a electromagnet. True or false?
frosja888 [35]
It is true, because a strong magnet that can be turned off and on is an electromagnet.
7 0
3 years ago
What are the type of bones structure in the skeletal system
Nikolay [14]

Components of the Skeletal System. The skeletal system is composed of four main fibrous and mineralized connective tissues : bones, ligaments, tendons, and joints. Bone: A rigid form of connective tissue that is part of the skeletal system of vertebrates and is composed principally of calcium.

5 0
3 years ago
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A newly discovered unicellular organism from acidic mine drainage is found to contain a cell wall, a plasma membrane, two flagel
makvit [3.9K]

Answer:

<em>The correct option is D)  a motile eukaryote</em>

Explanation:

Peroxisomes are structures which are present only in the plant or animal cells. Hence, based on this observation we can easily tell that the organism which is newly discovered is a eukaryote. Both plants and animals are eukaryotes.

Flagella are structures which are thin and hair shaped. Flagella allow movement of a cell, mostly they allow a whip-like movement. Based on this observation we will conclude that the organism discovered is a motile eukaryote.

5 0
3 years ago
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