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3 years ago

are the preserved remains of organisms, and they provide evidence to support Darwin’s theory of evolution. will give brainlyist

Business

2 answers:

Veseljchak [2.6K]3 years ago

5 0

Preserved remains of organisms are known as fossils.

Fossils are generally remains of ancient dead living organisms, including plants and animals. Fossils can be in the form of bones, shells, or even an animal’s imprint.

These things help Charles Darwin in proving his theory of evolution, which states that heritable characteristics in living organisms change over several generations.

Rzqust [24]3 years ago

4 0

Answer:

Fossils

Explanation:

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Sam closed the doors to her home-based consulting company only two years after opening because she was tired of working 80-hour

blondinia [14]

Answer:

There is sacrifice to having your own business. Sam wasn't ready to invest the hours needed to make it on his own.

Explanation:

There are many advantages to opening a new business. When you are an entrepreneur it is easy to get lost in all the benefits and don't pay attention to many os its disadvantages.

A big disadvantage is that you are always at work, you are working everywhere at all times. There are no off days, if you’re not working, then you’re not earning. You don’t need to be engaged 24/7 to have a chance at success in the world of entrepreneurship, but you will be working a lot more often.

Most people who find success in the world of entrepreneurship are working longer, harder days than the average “traditional” employee. You do have some flexibility when putting in those hours, so you can structure medical appointments, school visits, and other family needs within your day. You do not have the luxury of cutting back on your hours most days.

There is sacrifice to having your own business. Sam wasn't ready to invest the hours needed to make it on his own.

3 0

3 years ago

Pressure with Two Liquids, Hg and Water. An open test tube at 293 K is filled at the bottom with 12.1 cm of Hg, and 5.6 cm of wa

Radda [10]

Answer:

$1170839.28 dyn/cm^2$

16.9816 psia

$117.083928 kN/m^2$

Explanation:

To calculate the absolute pressure in the bottom of tube we need to sum the atmosferic and gauge pressure.

$P_{abs}=P_{atm}+P_G$

And the gauge pressure is given by the contributions of columns of water ( $P_{w}$ ) and mercury( $P_{Hg}$ ), we can calculate the contribution of each column as:

$P= \rho g h$ (*)

where $\rho$ is the respective density, g gravity and h is height.

So we have all the data required to use the above equations ( $P_{atm}$ , height and density of each column) we only need to be carefully with the units.

For simplicity we can to express all pressure contributions in mmHg ( $P_{atm}$ , $P_{w}$ and $P_{Hg}$ ). Note that the units "x" mmHg means the pressure at the bottom of a column of mercury of "x" mm high. For example, in this case we have a column 12.1 cm of Hg, that is a column of 121 mmHg (passing from cm to mm only requires multiply by 10) pressure exerted by that column is 121 mmHg.

Now pressure of 5.6 cm (56 mm) of water would be 56 mm of water, but it is not the same that mmHg, since the density of water is lower, the pressure exerted by 1 mm of water is lower than the exerted by 1 mm of Hg. The conversion between mmHg and mm of water is given by the relation between the densities.

$mmHg=\frac{\rho_w*mmH_2O}{\rho_{Hg}}$

$mmHg=\frac{0.998*mmH_2O}{13.55}=0.0737 mmH_2O$

And pressure of water in mmHg is

$0.0737*56=4.1246 mmHg$

The absolute pressure is:

$P_{abs}=P_{atm}+P_G= 756 + 121 + 4.1246 = 881.1246 mmHg = 88.11246cmHg$

To pass to dyn/cm^2 units we need to use the equation (*)

$P= \rho g h = 13.55 \frac{g}{cm^3} * 980.665 \frac{cm}{s^2} * 88.11246 cmHg = 1170839.28 \frac{g}{cm s^2} = 1170839.28 \frac{dyn}{cm^2}$

Note: We need to use cm Hg for units coherence

Now passing from dyn/ $cm^2$ to kN/ $m^2$ (or kPa) we need to consider that 1 dyn is $10^{-8}$ kN and 1 $cm^2$ is $10^{-4} m^2$ .

$1170839.28 \frac{dyn}{cm^2} * \frac{10^{-8}kN}{1 dyn}*\frac{cm^2}{10^{-4}m^2}=117.083928kN/m^2$

Now passing kN/ $m^2$ to psia. We need to consider that 1 psia is 6.89476.

$117.083928kN/m^2*\frac{1psia}{6.89476kN/m^2}=16.9816 psia$

8 0

3 years ago

a boy is three years younger than his sister. two years ago he was two-thirds of his sister's age. what are their present ages

padilas [110]

Answer:

The boy: 8 years old

The sister: 11 years old

Explanation:

We assume that the age at present of the boy is x (years old).

As he is younger than his sister 3 years, so that his sister's present age is great than x 3 years

=> Her present age is: x + 3 (years old)

Two years ago, the boy is younger than present two years

=> The boy's age two years ago is: x - 2 (years old)

Similarly, the sister's age two years ago is: (x+3)-2 = x + 1 (years old)

As given, two years ago he was two-thirds of his sister's age, so that we have:

The boy's age two years ago = $\frac{2}{3}$ × the sister's age two years ago

⇒ $x - 2 = \frac{2}{3}(x+1)$

⇒ $x - 2 = \frac{2}{3}x + \frac{2}{3}$

⇒ $x - \frac{2}{3}x = \frac{2}{3} + 2$

⇒ $\frac{1}{3} x = \frac{8}{3}$

⇒ $x = \frac{8}{3}. 3 = 8$

=> x + 3 = 8 + 3 = 11

So the present age of the boy is 8 years old, of the sister is 11 years old

5 0

3 years ago

What techniques did managers use to promote rock & roll?

o-na [289]

They used Independent record labels to their advantage.

5 0

3 years ago

Eddie just landed his first job out of college, and he’s excited about the position. However, Eddie needs to be dressed up every

Reptile [31]

Answer:

Why is it important to assess various credit options before making a decision on how to pay for

Explanation:

at questions should Selena ask before deciding on this option?

OPTION 3: Get a private college loan from her bank, Wells Fargo, which is currently offering fixed rates between 5.94% and 10.92%

PROS

What questions should Eddie ask before deciding on this option?

OPTION 2: Use $1250 of the $1500 he has saved in an Emergency Fund

PROS

CONS

What questions should Eddie ask before deciding on this option?

OPTION 3: Get a loan from Lending Club at an APR of 24.99%

PROS

CONS

What questions should Eddie ask before deciding on this option?

Selena is about to enter her senior year of college, when all of a sudden she realizes her school raised the tuition cost, and she’s short $6600 in her financial aid package.

OPTION 1: Charge the payments on the joint credit card account she shares with her mom, at a 14.99% APR

PROS

CONS

What questions should Selena ask before deciding on this option?

OPTION 2: Apply for a Federal Student Loan to coverhe’s excited about the position. However, Eddie needs to be dressed up every day and has no appropriate clothes right now. Eddie figures it will cost about $1250 to start a professional wardrobe.

OPTION 1: Open a 0% (for the first 6 months) credit card

PROS

CONS

What questions should Eddie ask before deciding on this option?

OPTION 2: Use $1250 of the $1500 he has sa

Eddie just landed his first job out of college, and he’s excited about the position. However, Eddie needs to be dressed up every day and has no appropriate clothes right now. Eddie figures it will cost about $1250 to start a professional wardrobe.

OPTION 1: Open a 0% (for the first 6 months) credit card

PROS

CONS

What questions should Eddie ask before deciding on this option?

OPTION 2: Use $1250 of the $1500 he has saved in an Emergency Fund

PROS

CONS

What questions should Eddie ask before deciding on this option?

OPTION 3: Get a loan from Lending Club at an APR of 24.99%

PROS

CONS

What questions should Eddie ask before deciding on this option?

Selena is about to enter her senior year of college, when all of a sudden she realizes her school raised the tuition cost, and she’s short $6600 in her financial aid package.

OPTION 1: Charge the payments on the joint credit card account she shares with her mom, at a 14.99% APR

PROS

CONS

What questions should Selena ask before deciding on this option?

OPTION 2: Apply for a Federal Student Loan to cover the cost

PROS

CONSbwls

What questions should Selena ask before deciding on this option?

OPTION 3: Get a private college loan jsiaolqhs alkas

4 0

3 years ago