What is the 2s in 42,256

Answers

Answer 1

Answer:

42,256 = 2,000

42,256 = 200

together they'd be 2,200 (if that's what you needed as well)

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Why is it that the north star is the only star in the night sky that seems to stay still

Answers

I think it is because it is directly about the north or south pole (I forget) so while all the other stars seem to rotate around because the Earth is rotating but the North Star is directly in the center. Don't take my word though.

How does meiosis I differ from meiosis II

Answers

Meiosis 1 makes 2 Haploid cells from one Diploid cell. Meiosis 2 separates the sister chromatids in the haploid cell in order to make 4 daughter cells.

How can you increase the amount of work done when you lift a book explain

Answers

Work done = mgh

Explanation:

In this case, while lifting the book we are working against the force of gravity.

Using the Newton's laws, we can find the force F required for lifting the book having mass (m) and acceleration due to gravity (g) that is ;

F = mg

and, the change in the position of the book that is Δx (Height)

→ Δx = Final position - Initial position

which is only the height, then the amount of work done will be calculated by :

W= mgh

WhereW = Work Done

m = Mass of the Body

g = Acceleration due to Gravity

h = Height of Body being displaced

1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?

Answers

The wave speed of a wave consist of frequency of 100 Hz and a wavelength of 0.30 m is 30 m/s.

What is Wave speed of a wave?

Wave speed is referred to the distance a wave travels in a particular amount of time, such as the number of meters it travels per second.

Speed = wavelength (λ) × frequency (ν).

Given wavelength = 0.30 m and frequency= 100 Hz

Wave speed = 0.30 × 100 = 30 m/s

So, the wave speed of the wave is 30 m/s.

Learn more about wavelength, here:

brainly.com/question/7143261

Answer: The wave speed of the wave is 30 m/s

Explanation:

Wave speed is defined as the product of its wavelength and frequency.

Mathematically,

$\text{Wave speed}=\lambda* \nu$

where,

$\lambda$ = wavelength of the wave = 0.30 m

$\nu$ = frequency of the wave = 100 Hz = $100s^(-1)$

Putting values in above equation, we get:

$\text{Wave speed}=0.30m* 100s^(-1)\n\n\text{Wave speed}=30m/s$

Hence, the wave speed of the wave is 30 m/s

Can someone explain #3

Answers

Answer:

Explanation:

Hey,

so here the student is saying that the given mass is of one atom. But when we usually talk about amu it is the unified atomic mass so mass of all the atoms present.

So that's why he is wrong.

Also the definitions states,

The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope.

Answer:

See below.

Explanation:

121.76 amu is the Relative Atomic Mass of Antimony (the average mass of the different isotopes). . The element exists as a mixture of isotopes , the main one being SB121 which has a mass of 121.

Name 3 some sources of CO2

Answers

Natural sources include decomposition,ocean release and respiration.

Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal,oil and natural gas.

Final answer:

The three primary sources of carbon dioxide (CO2) in the atmosphere are the respiration of organisms, the burning of fossil fuels, and deforestation or land use changes.

Explanation:

Carbon dioxide (CO2) is a type of gas that naturally exists in the atmosphere. It is primarily released from three key sources, which include:

The three primary sources of carbon dioxide (CO2) in the atmosphere are the respiration of organisms, the burning of fossil fuels, and deforestation or land use changes.

The three primary sources of carbon dioxide (CO2) in the atmosphere are the respiration of organisms, the burning of fossil fuels, and deforestation or land use changes.

Yet due to human activities like industrialization and deforestation, the amounts of CO2 in the atmosphere have been increasing at an unprecedented rate, leading to global climate change.

Learn more about Sources of CO2 here:

brainly.com/question/17991976

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