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3 years ago

is a persons DNA likely to be more similar to the DNA of his biological parents or to the DNA of one of his first cousins

2 answers:

4 0

It is more likely to be similar to his/her parents because the get half of their genetic code from their mom and half from their dad.

Alenkasestr [34]3 years ago

4 0

Thats a good question but tbh i think it would be closer to that of his bilogical parents because half of are dna comes from our father and the other half from our mother so i would say the bilogical parents not the first cousin

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tankabanditka [31]

Answer:

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3 years ago

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3 years ago

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2 years ago

We are going to make an imaginary engine using water. We are going to heat 100 grams of water to 120 C from its initial temperat

Svetach [21]

Answer:

The work done by this engine is 800 cal

Explanation:

Given:

100 g of water

120°C final temperature

22°C initial temperature

30°C is the temperature of condensed steam

Cw = specific heat of water = 1 cal/g °C

Cg = specific heat of steam = 0.48 cal/g °C

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Question: How much work can be done using this engine, W = ?

First, you need to calculate the heat that it is necessary to change water to steam:

$Q_{1} =m_{w} C_{w} (100-22)+m_{w}L_{w}+m_{w}C_{g}(120-100)$

Here, mw is the mass of water

$Q_{1} =(100*1*78)+(100*540)+(100*0.48*20)=62760cal$

Now, you need to calculate the heat released by the steam:

$Q_{2} =m_{w}C_{g}(120-100)+m_{w}L_{w}+m_{w}C_{w}(100-30)=(100*0.48*20)+(100*540)+(100*1*70)=61960cal$

The work done by this engine is the difference between both heats:

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Marianna [84]

OB is the correct answer

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