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3 years ago

What do ethical guidelines for research with human subjects mean?

1 answer:

4 0

By minimizing harms and risks and maximize benefits , respect human dignity, privacy and autonomy, take special precautions with vulnerable population and strive to distribute the benefits and burdens of research fairly

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Which is easier for a beginner? (This is for archery) O long bow O recurve bow

AlexFokin [52]

Answer:

The recurve bows

Explanation:Vote brainliest plz

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3 years ago

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What is measurement ?...

mariarad [96]

Answer:

the size, length, or amount of something, as established by measuring.

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2 years ago

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I have about 4 questions can anyone help? Its about motion (I don't quite know what type of science that is...)

Neko [114]

Motion is physics. motion is the displacement,distance,velocity, acceleration, time, and speed.

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3 years ago

What mass of a material with density rho is required to make a hollow spherical shell having inner radius r1 and outer radius r2

Margarita [4]

Answer:

$m=\rho\times \frac{4}{3} \times \pi \times(r_2^3-r_1^3 )$

Explanation:

We have to make a hollow sphere of inner radius $r_1$ and outer radius $r_2$ .

Then the mass of the material required to make such a sphere would be calculated as:

Total volume of the spherical shell:

$V_t=\frac{4}{3} \pi.r_2^3$

And the volume of the hollow space in the sphere:

$V_h=\frac{4}{3} \pi.r_1^3$

Therefore the net volume of material required to make the sphere:

$V=V_t-V_h$

$V=\frac{4}{3} \pi(r_2^3-r_1^3)$

Now let the density of the of the material be $\rho$ .

Then the mass of the material used is:

$m=\rho.V$

$m=\rho\times \frac{4}{3} \times \pi \times(r_2^3-r_1^3 )$

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4 years ago

Kamal, Kamala, Krishna invert a sum of RS= 30,000 on a business in the ratio 2 : 3 : 5. Find the each of their investment.

Crazy boy [7]

Here's the solution,

Let the shares be 2x, 3x and 5x according to their shared investment ratio,

now, we know :

=》2x + 3x + 5x = 30000

=》10x = 30000

=》x = 3000

So, value of x = 3000

hence, the share of each shareholder is :

kamal = 2x = 6000
kamala = 3x = 9000
Krishna = 5x = 15000

i hope it helped.....

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3 years ago

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