All categories

3 years ago

Why is it that you might feel the effect of gravitational forces between you and Earth, but not between you and a classmate?

Chemistry

1 answer:

MakcuM [25]3 years ago

4 0

Answer:

Because the mass of the the earth is way bigger than the mass of a classmate

Explanation:

Formula for force of gravity is;

F = Gm1•m2/r²

Where m1 and m2 are the two objects masses in question.

So, m1 may be your mass while m2 may be either the mass of the earth or your classmate.

The bigger the mass of m2, the more the force of gravity

Mass of the earth is about 5.97 × 10^(24) kg is which is so much more bigger than that of the classmate which is a human being.

Therefore, the reason why you may feel the effect of the gravitational forces between you and Earth, but not between you and a classmate is probably because the mass of the the earth is way bigger than the mass of a classmate

You might be interested in

1. From the following standard electrochemical potential (and your knowledge of biomedically important metals), answer the quest

Monica [59]

Answer:

The following answer are based only on emf values

a).Most anodic element ,Titanium - Ti

b).Metal That will corrode easily is : Titanium - Ti

c). Most reactive metal is Titanium-Ti

d).Al can't be used for making implants because it undergo corrosion easily and do not form strong passive oxide layer.

Ti forms very strong passive layer which prevents further corrosion.

Au is least reactive and does not corrode.

Note : You have to give answer according to E values

In actual(without considering E values) most anodic, reactive , corrosive element is Al

Explanation:

Here the oxidation potential data is given (since elements are getting oxidised)

$\Delta^{0} E$ : Standard Reduction Potential : It is tendency of the element to gain electron and get reduced.

Oxidation Potential is opposite to reduction potential

Standard Oxidation Potential :It is tendency of the element to loose electron and get oxidised.

It is measured in Volts/V

More positive (greater)the value of the oxidation potential , stronger is the tendency of the element to get oxidised.
More negative(lesser) the value of oxidation potential lesser the tendency of the element to get oxidised. Hence the element undergo Reduction in comparison to other with more positive value .

The main application $\Delta^{0} E$ values is in electrochemical cell to predict the products of the reaction. or predict whether the reaction is spontaneous or not.

Anodic means tendency to undergo oxidation

Since $Ti\rightarrow Ti^{+}$ has maximum value of $\Delta^{0}E$ = 2.00V , so it get oxidised as compared to other elements.

Corrode , The metal which oxidise easily will also undergo corrosion easily

From the , E values Ti show maximum tendency of oxidation hence it also get corroded easily.

Ti is the most reactive because it oxidised fast as compare to other elements
Au (gold) is the least reactive element as its $\Delta^{0}E$ value is negative. So gold don't get corrode and used for making implants. Ti can also be used , since it is most reactive so it react with oxygen present in atmosphere and form a passive layer of oxide which prevent its corrosion. Al also form passive oxide but form very thin layer which is not able to protect it from corrosion

4 0

4 years ago

How many grams of Sodium metal are required to completely react with 100 g of Magnesium chloride hexahydrate in a single replace

slava [35]

Answer:

MgCl2 - 6H2O

203.3 mol

MgCl2 + 2Na = 2NaCl + Mg

22.6g

Explanation:

1. Write the formula of hydrate and find molar mass.

2. Write a balanced single replacement (don't include H2O)

3. Do the given/wanted calculation (include H2O in molar mass of given)

6 0

3 years ago

IgorC [24]

Answer:

Mass of NaF in 250 g tube of toothpaste = 100 mg of NaF

Explanation:

Mass of fluoride per gram of toothpaste = 1 mg

From the given data, the fluoride compound that is most often used in toothpaste is sodium fluoride, NaF, which is 45% fluoride by mass, mass of sodium fluoride per gram of toothpaste can be determined as follows:

1 mg of fluoride per gram of toothpaste = 45% total mass of NaF per gram of toothpaste

100% mass of NaF in toothpaste = 100/45 * 1 mg = 2.22 mg of NaF.

Therefore, mass of NaF per gram of toothpaste is 2.22 mg.

The mass of NaF in 250 g of toothpaste is then calculated below:

In 250 g of toothpaste, mass of NaF = 250 * 2.22 mg = 99.9 mg of NaF

6 0

3 years ago

What is a tremor? how does occur?

Klio2033 [76]

Explanation:

$\sf \: A \: tremor \: is \: a \: rhythmic \: shaking\: movement \: in \: one \\ \sf or \: more \: parts \: of \: your \: body. \\ \sf It \: is \: involuntary, \: meaning \: that \: you \: cannot \\ \sf control\: it. \: This \: shaking \: happens \\ \sf because \: of \: muscle \: contractions. \\\sf A \: tremor \: is \: most \: often \: in \: your \: hands, \\ \sf but \: it \: could \: also \: affect \: your \: arms, \\ \sf head, \: vocal cords, \: trunk, \: and \: legs.$

7 0

3 years ago

A chemistry graduate student is studying the rate of this reaction:

Hitman42 [59]

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem

8 0

4 years ago