If the length of a string increases 2 times but the mass of the string remains constant, the new density of the string will equal the original density multiplied by what factor?

Answers

Answer 1

If the length of a string increases 2 times but the mass of the string remains constant, the original density  will be multiplied by a factor  mathematically given as

v=1.414 times

Will the new density of the string equal the original density multiplied by what factor?

Generally, the equation for the  volume is mathematically given as

v = sqt(TL/m)

Where

density = mass/length

Therefore

[tex]v2/v1 = \sqrt{L2/L1}[/tex]

[tex]v2/v1 = \sqrt{2}[/tex]

In conclusion,v ratio will give us

v=1.414 times

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Related Questions

What mass, in grams, of sodium sulfate is needed to make 234.9 g of a 1.7 % (m/m) aqueous solution of sodium sulfate?

Answers

Answer:

I think its this 4.125 g Na2SO4 or this 4.125 g

The release of aluminium ions as a result of acid rain is less significant in areas containing limestone rock - why?

Answers

Answer:

As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes. The more acid that is introduced to the ecosystem, the more aluminum is released. Some types of plants and animals are able to tolerate acidic waters and moderate amounts of aluminum

Explanation:

Balance the equation for a half-reaction that occurs in acidic solution. Use e− as the symbol for an electron.

MnO_{4}^{-} -> MnO_{2}

Answers

The balanced half reaction equation is MnO4^- + 4H^+ ------>MnO2 + 2H2O + 3e

What is a redox reaction?

The term redox reaction has to do with a reaction in which there is a loss or  gain of electrons. In this reaction, one specie accepts electrons while another specie looses electrons.

The balanced half reaction equation in acid is; MnO4^- + 4H^+ ------>MnO2 + 2H2O + 3e

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What would be the immediate product of neutron absorption by Ag 107

Answers

The immediate product of neutron absorption by Ag-107 is silver atom with a mass of 108, Ag-108.

What is radioactivity?

Radioactivity is the spontaneous emission of radiation as wall as particles and energy l by the nucleus of elements due to their disintegration.

The radioactive particles that are usually emitted include:

alpha particles beta particles andneutrons

The neutron has a mass of 1.

When silver isotope having a mass of 107 absorbs a neutron, the silver isotope produces will have a mass of 108, Ag-108.

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How moles of Cl' are in a 45 mL of 1,4 M solution of NaCl?

Answers

Answer:

.063 moles Cl-

Explanation:

To find moles multiply molarity by volume.

1.4*.045=.063 moles Cl-

What does an electrostatic force do?
A. An electrostatic force attracts oppositely charged particles.
B. An electrostatic force holds particles together by sharing
electrons.
C. An electrostatic force holds particles of the same charge together.
D. An electrostatic force attracts particles via gravitational pull.

Answers

Answer:

A.

Explanation:

Opposite charged particles attract.

Particles of same charge are repelled.

Answer:

attracts opposites (a)

Explanation:

How many milliliters of a 1 M nitric acid solution are required to prepare 60 mL of 0.15 M solution?
Select the correct answer below:
400 mL
O 9 mL
O 0.25 mL
none of the above

Answers

9 mL
Explaination:
V1= m2*v2/m1 = 60 x 0.15 /1 = 9 mL

9 mL of a 1 M nitric acid solution are required to prepare 60 mL of 0.15 M solution. Therefore, the correct option is option A.

What is volume?

A measurement of three-dimensional space is volume. It is frequently expressed quantitatively using SI-derived units, as well as several imperial or US-standard units. Volume and the notion of length are connected. A container's capacity is typically thought of as being represented by its volume.

Rather considering how much space the container takes up, think about how much fluid it could hold. Volume was initially measured using naturally occurring vessels of a comparable shape and then with standardised containers. Arithmetic formulas can be used to quickly calculate the volume of several straightforward three-dimensional shapes.

V1= m2×v2/m1 = 60 x 0.15 /1 = 9 mL

Therefore, the correct option is option A.

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dk how to do this :)

Answers

Answer:

2Mg, 2 02, MgO

What is the product of radioactive decay 0/-1 e called?
A. An alpha particle
B. A beta particle
C. Nuclear fission
D. A gamma wave

Answers

Answer:

it represents a beta particle so the answer is B a beta particle

Answer:

The product of radioactive decay ⁰-₁e called a beta particle

B. A beta particle

How many molecules are in 2.0 moles?

Answers

Answer:

12 or 1.24e

please make this answer brainliest If I helped you!

When liquids of a ph 5 and ph 2 mixed together, gives what ph value

Answers

Answer:

By mixing two solutions of differing pH values, the final pH of the mixed solution is going to be a function of the pH-, or the hydrogen ion (H+), of the lower pH solution, and the final volume. The hydrogen ion(H+) of the higher pH solution has little to no effect in the final pH value.

Which of the following is most likely to lose electrons in an ionic compound?

a. lead (Pb)

b. carbon (C)

C. oxygen (O)

d. hydrogen (H)

Answers

Answer:

a. Lead (Pb)

Am 100% sure

Hope it helps

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If 4.80 mol Ca mixed with 2 mol N2, which is the limiting reactant? 3Ca (s) + N2 (g) Ca3N2 (s)

Answers

Nitrogen in the limiting reactant x

an organisms particular role in its habitat,or when and how it survives, is called its

Answers

Answer:

Niche.

A niche is a place where an organism lives at a given time or how the organism lives there.

Hello, do these calculations using table 1 look correct? Thank you

Table 1.
Sugar (Sucrose) Data
Mass of unchewed gum 3.7 (g)
Mass of chewed gum 2.0 (g)
Mass of sugar 1.7 (g)
Percent sugar
46%

Post-Lab Questions
1. What is the percent sugar? Show your calculations.
mass of sugar (1.7) ÷ mass of unchewed gum ( 3.7) × 100 = 45.94 (46%)
2. What is the molar mass of sugar (sucrose, C12H22O11)? Show your calculations.
C=12×12=144
H=1×22=22
O=16×11=176
To get the molar mass of the entire compound you, 144 + 22 + 176 = 342 g/mol
3. Convert the mass of dissolved sugar to moles. Show your calculations.
1.7 g ÷ 342 g/mol = 0.00497 moles
4. Convert the moles of sugar to molecules of sugar. Show your calculations.
0.00497 mole × 6.022 × 10^23 = 2.992934 × 10^21 molecules
5. Imagine that you used four pieces of gum instead of two. Calculate the number of moles. Show your calculations.
In theory, assuming the sticks of gum were exactly the same mass and sugar content, the moles would double.
2 ÷ 342 g/mol × 1.7 = 0.00994 moles
6. How does the mass of the saliva alter the experimental data?
It is impossible to blot off all the saliva with a paper towel because the gum sticks to the paper, so it adds more mass to the chewed gum and therefore alters the amount and percent of sugar calculations.

Answers

Answer:

yes it does look correct. good job.

Post- lab the percent sugar 46%, and the molar mass of sugar is 342 g/mol,  the mass of dissolved sugar to moles is 0.00497 moles of sugar to molecules of sugar is  2.992934 × 10^21 molecules, assuming the sticks of gum were exactly the same mass and sugar content, the moles would double  0.00994 moles.

What are moles?

moles is the unit of the molecule and it is defined as the number of molecules participating in a chemical reaction and value of one mole is equal to Avogadro constant that is 2.303 × 10²³

Sugar percentage = mass of sugar / mass of gum × 100  = 1.7 / 3.7 × 100 =  45.94 (46%)

Molar mass of sugar = C12H22O11 = C=12×12=144 + H=1×22=22  + O=16×11=176 = 342 g/mol  

Mass of dissolved sugar to moles = 1.7 g ÷ 342 g/mol = 0.00497 moles

The moles of sugar to molecules of sugar = 0.00497 mole × 6.022 × 10^23 = 2.992934 × 10^21 moleculesIn the given theory using four pieces of gum will exactly be the same to the mass of sugar.2 ÷ 342 g/mol × 1.7 = 0.00994 moles

The mass of the saliva alter the experimental data because it is not possible to remove all the saliva from the surface as it gets stick to the paper which changes the amount of sugar.

Therefore, the percent sugar 46%, and the molar mass of sugar is 342 g/mol, the mass of dissolved sugar to moles is 0.00497 moles of sugar to molecules of sugar is  2.992934 × 10^21 molecules, assuming the sticks of gum were exactly the same mass and sugar content, the moles would double  0.00994 moles.

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what does SPDF Blocks represent on the periodic table?

Answers

Answer:

SPDF blocks represents the last electron of particular element entering into valance subshell.

example: oxygen is p block element because (1s2, 2s2 2p4) its last electron is in p block

A block of the periodic table is unified by the atomic orbitals in which valence electrons lie in.

What is the block in the periodic table?

A block can be described as a set of elements in which the valence electrons lie in atomic orbitals. Each block in the periodic table is named after its characteristic orbital: s-block, p-block, d-block, and f-block.

The block names (s, p, d, and f) are derived from the value of an electron's azimuthal quantum number: sharp (0), principal (1), diffuse (2), and fundamental (3).

The s-block, where 's' stands for "sharp" and azimuthal quantum number 0, is on the left side of the periodic table. The p-block, where 'p' stands for "principal" and azimuthal quantum number 1, is on the right side of the modern periodic table and elements in groups 13 to 18.

The d-block, where 'd' stands for "diffuse" and azimuthal quantum number 2, is in the middle of the periodic table and elements from groups 3 to 12.

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A solution was found to have a 15.6 % transmittance at 500 nm, its wavelength of maximum absorption, using a cell with a path length of 5.00 cm. Calculate the absorbance of the solution in a 1.00 cm cell at 500 nm. A. 0.161 B. 69.0 C. 0.0312 D. 4.04

Answers

For the absorbance of the solution in a 1.00 cm cell at 500 nm  is mathematically given as

A’ = 0.16138

What is the absorbance of the solution in a 1.00 cm cell at 500 nm?

Absorbance (A) 2 – log (%T) = 2 – log (15.6) = 0.8069

Generally, the equation for the Beer’s law is mathematically given as

A = ε*c*l

0.8069 = ε*c*(5.00 )

ε*c = 0.16138 cm-1

then for when ε*c is constant

l’ = 1.00

A’ = (0.16138 cm-1)*(1.00 cm)

A’ = 0.16138

In conclusion, the absorbance of the solution in a 1.00 cm cell at 500 nm is

A’ = 0.16138

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What is the difference between weight and mass?

a
Mass depends on gravity and weight depends on the amount of matter.
b
Mass depends on electrons and weight depends on pounds.
c
Mass depends on the amount of matter and weight depends on gravity and mass.
d
Mass depends on pounds and weight depends on electrons.

Answers

Answer:

It's C. Mass Depends on the amount of matter and weight depends on gravity and mass.

Explanation:

Hope this helps

A student boils water in an electric kettle for 20 minutes. Using the same mains supply, he wants to reduce the boiling time of water. To do so, should he increase or decrease the length of the heating element? Justify your answer.​

Answers

Answer:

The student needs to increase the length of the heating element

Explanation:

Increasing the length of the heating elements helps to increase the surface area of the heating elements which allows for more water to come in contact with the heating element

Please Help Me Answer Numbers 7, 9, 10, and 11!

Answers

Add a 8 kid and u are just adding

Which action would shift this reaction away from solid silver chloride and toward the dissolved ions

Answers

removing chloride ion is the reaction away

Hydrogen has a melting point of -259 °C, and a boiling point of -253 °C. Its density at liquid state is 0.07 g/cm³. What is the physical state of Hydrogen at -250 °C? Explain your answer.

Answers

Answer:

Explanation:

Remark

-250, if you can believe it, is actually warmer than - 253. At -250 the hydrogen has gone through a phase change (a phase change means that it has gone  from a liquid to a gas).

From here on as far as you are concerned, the hydrogen will stay as a gas. Later on, if all other things remain constant, you will learn that hydrogen can do some very strange things.

find the molarity of 131 g Ba(NO3)2 dissolved in 750.0 water

Answers

Answer:

6.68 x 10^-4

Explanation:

131g ÷ 261.337g/mol = 0.5012685 moles

0.5012685 moles ÷ 750.0 liters =

0.5012685÷ 750.0=0.000668358

6.68 x 10^-4

What is the effect of pressure on the volume of a gas? *answers*
(Reflect on the laboratory experiment)

Answers

Answer:

The Relationship between Pressure and Volume: Boyle's Law

As the pressure on a gas increases, the volume of the gas decreases because the gas particles are forced closer together. Conversely, as the pressure on a gas decreases, the gas volume increases because the gas particles can now move farther apart


20 L of nitrogen gas are collected at a temperature of 50°C and 2 atm. How many grams of nitrogen gas were collected? A.21.1 g B.29.6 C.42.3 g D.59.2

Answers

Taking into account the Ideal Gas Law, the mass of nitrogen gas collected is 21.1 grams.

Ideal Gas Law

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of gases:

P×V = n×R×T

Mass of nitrogen

In this case, you know:

P= 2 atmV= 20 Ln= ?R= 0.082 [tex]\frac{atm L}{molK}[/tex]T= 50 °C= 323 K (being 0°C= 273 K)

Replacing in the ideal gas law:

2 atm ×20 L = n×0.082 [tex]\frac{atm L}{molK}[/tex] ×323 K

Solving:

n= (2 atm ×20 L) ÷(0.082 [tex]\frac{atm L}{molK}[/tex] ×323 K)

n= 1.51 moles

Being the molar mass of nitrogen 14 g/mole, that is the amount of mass that a substance contains in one mole, the mass of nitrogen gas collected is calculated as:

[tex]mass of nitrogen gas=1.51 molesx\frac{14 grams}{1 mole}[/tex]

mass of nitrogen gas= 21.1 grams

Finally, the correct answer is option A.: the mass of nitrogen gas collected is 21.1 grams.

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describe the arrangement of the 118 elements in the periodic table how is it arrange?

Answers

The periodiC table is organized By molar mass


What is the pressure exerted by a force of 14.7 N over an area of 0.00482 m²?

Answers

Answer:

[tex]p= \frac{F}{A} = \frac{ 14.7 }{0.00482} = 3050 \: Pa[/tex]

What is the difference between typhoons and hurricanes?
A. Wind speed
B. Strength of the wind
C. Amount of rainfall
D. Place of origin

Answers

What is the difference between typhoons and hurricanes?

A. Wind speed

B. Strength of the wind

C. Amount of rainfall

D. Place of origin

typhoons and hurricanes are both tropical cyclones its only one difference is the place of origin

option D place of origin

6. How many molecules of ammonia are present in 34 g of ammonia (Formula = NH3)?

Answers

12.044*10^23, because 1 mole is 6.022*10^23


What is the difference between a heterogenous and a homogenous mixture?

Answers

Answer:

There are two types of mixtures: heterogeneous and homogeneous. Heterogeneous mixtures have visually distinguishable components, while homogeneous mixtures appear uniform throughout. The most common type of homogenous mixture is a solution, which can be a solid, liquid, or gas.

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