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enot [183]
3 years ago
5

A man stands on the top of the hill at point A and then runs down at point B. What kind of energy conversion occurs from point A

to point B?
- kinetic to heat
- elastic potential to kinetic
- gravitational potential to kinetic
- kinetic to elastic potential
- kinetic to gravitational potential

Chemistry
2 answers:
melisa1 [442]3 years ago
7 0
Kinetic to heat I think
Yanka [14]3 years ago
3 0

Answer:

The answer is gravitational potential to kinetic energy

Explanation:

On the top of the hill there is height and distance to fall and gravity will have more potential. For instance gravity is represented by 9.81 m/s^2 which means that it will accelerate. And when on top of a hill there is more time to accelerate, and that is it's gravitational potential. Then when going down the hill that potential energy is transformed into kinetic energy (which is defined as a body in motion). Hence, the man from the top of the hill, point A, to moving down the hill, point B, starts with gravitational potential at point A, then that potential is transferred into kinetic energy at point B.

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7 Which physical characteristic of a solution may
Nuetrik [128]

Answer:

2= its color

Explanation:

Transition elements are present in the middle of periodic table. These are d-block elements.

These are 38 elements.

All transition elements have partially filled d orbitals.

They showed color in compound because of d-d transition.

During the d-d transition electron absorbed the energy and emit the reminder energy. The emission is usually in the form of color light.

The color of ion is complementary to the absorbed color.

The transition elements are used as a catalyst in industries such as polymer, petroleum industries.

They are ductile, conduct heat and electricity.

5 0
2 years ago
Traumatic acid contains 63.13% carbon, 8.830% hydrogen, and 28.03% oxygen. its molar mass is 228 g/mol. determine the empirical
Zina [86]
Q1)
firstly we need to determine the empirical formula of the compound. empirical formula is the simplest ratio of components in the compound.
percentages of the elements have been given, so lets assume we are calculating for a compound of 100g 
                                  C                               H                              O
mass                       63.13 g                    8.830 g                       28.03 g
molar mass             12 g/mol                   1 g/mol                      16 g/mol
number of moles     63.13/12                   8.830/1                      28.03/16
                                5.26                           8.830                           1.75
divide by the smallest number of moles 
                                5.26/1.75                   8.830/1.75                   1.75/1.75
                                = 3.01                        = 5.04                           =1
rounded off to the nearest whole numbers 
C - 3
H - 5
O - 1
therefore empirical formula = C₃H₅O

Q2)
we have to next determine the molecular formula of the compound 
molecular formula gives the actual composition of elements in the compound. 
since we know the empirical formula and molecular mass, we can find how many empirical units are in the molecular formula.
mass of empirical unit = Cx3 + Hx5 + Ox1
                                    = 12 g/mol x 3 + 1g/mol x 5 + 16 g/mol x 1
                                    = 36 + 5 + 16 = 57 g/mol
the molecular mass = 228 g/mol
then number of empirical units in the molecular formula = 228 / 57 = 4
therefore there are 4 empirical units 
then the molecular formula = 4 x empirical formula =4 (C₃H₅O)
molecular formula = C₁₂H₂₀O₄




3 0
3 years ago
What would happen to temperature on Mercury during the day if a sunspot was directly in line with its surface?
snow_tiger [21]
It would get really hot and probably cause multiple chemical reactions
7 0
3 years ago
Gases become more soluble in liquids as the temperature
Oksi-84 [34.3K]
 gases become more soluble in liquids as the temperature gets higher
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3 0
2 years ago
Define the following terms:<br><br> science<br><br> technology <br><br> scientific model
laila [671]

Answer:

Science is the study of the nature and its behaviour.

Technology refers to methods and devices that are the result knowledge.

A scientific model is a diagram of an object, process or system that is used to help make the subject matter of the diagram easier to understand.

5 0
2 years ago
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