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IgorC [24]
2 years ago
11

Motion is a change in an object​

Chemistry
2 answers:
lyudmila [28]2 years ago
8 0

Answer:

motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.

Explanation:

Vanyuwa [196]2 years ago
5 0

Answer:

why is this in chemistry? this is physics.

Explanation:

Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.

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Which regions of the world seem to be suffering most from loss of species ?
Lana71 [14]

Answer:

The most dangerous area for animals and plants is the one that contains the greatest biodiversity on the planet: Southeast Asia. In this region are the five most affected countries in the world: Malaysia, Brunei, Singapore, Indonesia and Thailand. The Atlantic rainforests of Brazil are also very affected, this is due to the fact that great catastrophes have occurred in these places lately, such as the massive fire in the Amazon, and the floods that occurred after the tremendous absence of vegetation that these places suffered.

Explanation:

Also on the other hand, the regions with the highest extinction are those that carry out little environmental policies where care has not been taken for species that are in danger of extinction, as happens, for example, in those islands such as the Galapagos Islands, which are subject to severe fines for harm turtles.

3 0
3 years ago
The first excited electronic energy level of the helium atom is 3.13 x 10-18 J above the ground level. Estimate the temperature
salantis [7]

Answer:

75603.86473 K

Explanation:

Given that:

The 1st excited electronic energy level of He atom = 3.13 × 10⁻¹⁸  J

The objective of this question is to estimate the temperature at which the ratio of the population will be 5.0 between the first excited state to the ground state.

The formula for estimating the ratio of population in 1st excited state to the ground state can be computed as:

\dfrac{N_2}{N_1} = e ^{^{-\dfrac{(E_2-E_1)}{KT}}} =   e ^{^{-\dfrac{(\Delta E)}{KT}}}

From the above equation:

Δ E = energy difference =  3.13 × 10⁻¹⁸  J

k = Boltzmann constant = 1.38 × 10⁻²³  J/K

\dfrac{N_2}{N_1} = 0.5

Thus:

0.05 =e^{^{ -\dfrac{3.13 \times 10^{-18} \ J}{1.38\times 10^{-23 \ J/K}\times T}}}

In (0.05) = { -\dfrac{3.13 \times 10^{-18} \ J}{1.38\times 10^{-23 \ J/K}\times T}}}

-3.00 = { -\dfrac{3.13 \times 10^{-18} \ J}{1.38\times 10^{-23 \ J/K}\times T}}}

-3.00 = -226811.5942 \times \dfrac{1}{T}

T =  \dfrac{-226811.5942}{-3.00 }

T = 75603.86473 K

4 0
3 years ago
1 Fuel with higher calorific value are considered efficient fuel. why?<br> 2
vova2212 [387]

:1because they release large amount of haet per effective mass when burned

Addition Einstein eqn Energy=mass×freq

2 Small byproduct is smokes and ashes

8 0
3 years ago
Read 2 more answers
PLEASE HELP I DONT UNDERSTAND A THING
Ymorist [56]

Answer:

I and III

Explanation:

6 0
3 years ago
Which of the following objects would be the best conductor of electricity?
earnstyle [38]

Answer:

A safety pin

Explanation:

Rubber, plastic and food are all non-metals, meaning they are poor conductors of heat and electricity. However, safety pins are made up of steel - a metal - making them good conductors.

4 0
2 years ago
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