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dsp73
3 years ago
5

Explain the effect of Earth’s gravity on objects on the surface of Earth.

Chemistry
2 answers:
xeze [42]3 years ago
8 0
This is the sample answer: 
Gravity pulls objects toward Earth at a rate of 9.8 m/s2<span>. Weight is the result of gravity's pull on a mass on Earth's surface.

</span>
just olya [345]3 years ago
5 0

Explanation: Gravitational force of earth is the attractive force which acts between any two bodies having mass. It is the product of the mass of the object and the acceleration due to gravity.

Mathematically,

w=mg

Where,

m = Mass of the object

g = Acceleration due to gravity which is 9.8ms^{-2}

This is known as the weight of the object on Earth's surface.

This force is mainly responsible for:

1. Our walking on the Earth's surface.

2. Falling of an apple from the tree on the surface of Earth.

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Which of the following groups have seven valence electrons and are very reactive?
valina [46]

Answer:

Column 17 halogens

Explanation:

To answer the question we need to know the following;

What are valence electrons?

  • Valence electrons are outermost electrons in the outermost energy level of an atom of any element.

What are halogens?

  • Halogens are group 7 elements that have seven valence electrons. They include, chlorine, fluorine, iodine, etc

What is the reactivity of halogens?

  • Halogens are the most reactive non-metals in the periodic table. They react by gaining one electron to attain a stable configuration.
4 0
3 years ago
Read 2 more answers
Which statement about melting and boiling points is true? Question 3 options:
bonufazy [111]

Answer:

B

Explanation:

I believe it is B but I am not entirely sure! don't do this is B doesn't sound or look right to you!

4 0
3 years ago
What are the pros and cons for natural gasses
Kryger [21]
<span>Pros of Natural Gas:
</span><span>1. Produces Less Soot
</span><span>2. Abundant Supply
</span><span>3. Infrastructure in Place
</span>
<span>Cons of Natural Gas:
</span><span>1. Highly Inflammable
</span><span>2. Greenhouse Gas Emissions
</span>3. <span>Non-Sustainable:
</span>
Hope that helps! *if you need more let me know*
6 0
3 years ago
Read 2 more answers
What is CdF^4 compound name
topjm [15]

Answer:

well it might be 1.)Cadmium Fluoride CdF2 150.4078

2.)Cadmium(II) Perfluorate Cd(FO4) 2278.403

3.)Cadmium Ferrocyanide Cd2Fe(CN) 6436.7714

Explanation:

3 0
3 years ago
At what substrate concentration would an enzyme with a K_cat of 30.0 s⁻¹ and a Km of 0.0050 M operate at one-quarter of its maxi
Umnica [9.8K]

Answer:

The correct answer is option B.

Explanation:

Michaelis–Menten 's equation:

v=V_{max}\times \frac{[S]}{(K_m+[S])}=k_{cat}[E_o]\times \frac{[S]}{(K_m+[S])}

V_{max}=k_{cat}[E_o]

v = rate of formation of products

[S] = Concatenation of substrate = ?

[K_m] = Michaelis constant

V_{max}= Maximum rate achieved

k_{cat} = Catalytic rate of the system

E_o = initial concentration of enzyme

We have :

v=\frac{V_{max}}{4}

[S] =?

K_m=0.0050 M

v=V_{max}\times \frac{[S]}{(K_m+[S])}

\frac{V_{max}}{4}=V_{max}\times \frac{[S]}{(0.0050 M+[S])}

[S]=\frac{0.005 M}{3}=1.7\times 10^{-3} M

So, the correct answer is option B.

8 0
3 years ago
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