2 years ago

What do ethical guidelines for research with human subjects mean in psychology?

1 answer:

7 0

Explanation:

Research in humans should be based on from library and animal experimentation . Research protocols should be reviewed by an independent committee prior to initiation

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What type of rock converts into over rock types under different conditions

Tasya [4]

Answer:

the metamorphic rock converts into other rock types under different conditions

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3 years ago

How many newtons does a 5-kg backpack weigh on Earth?

zvonat [6]

A 5kg backpack will weigh 49 newtons on earth

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3 years ago

A typical adult human lung contains about 330 million tiny cavities called alveoli. Estimate the average diameter of a single al

Amanda [17]

Answer:

The average diameter of a single alveolus is 0.0222 cm.

Explanation:

Volume of the lung ,V= 1.9 L

$1 L = 1000 cm^3$

$1.9 L=1.9\times 1000 cm^3=1900 cm^3$

Number of alveoli in a human lung = $330\times 10^6$

Volume of single alveoli =v

$v\times 330\times 10^6=V$

$v=\frac{1900 cm^3}{330\times 10^6}$

$v=5.7575\times 10^{-6} cm^3$

The alveoli are spherical.

Radius of an alveolus = r

Volume of the sphere = $\frac{4}{3}\pi r^3$

$v=\frac{4}{3}\pi r^3$

$5.7575\times 10^{-6} cm^3=\frac{4}{3}\times 3.14\times r^3$

$r=0.0111 cm$

Diameter of the alveolus =d

d = 2r = 2 × 0.0111 cm = 0.0222 cm

The average diameter of a single alveolus is 0.0222 cm.

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3 years ago

Which of the following correctly describes the state of matter of one of the samples?

zheka24 [161]

I think the answer is D

3 0

3 years ago

The mass of an object is 10 kg and the velocity is 4 m/s, what is the momentum?

eduard

The answer is 40 kg. m/s.

Formula for momentum:

p=mv

p=(10 kg.)(4 m/s)

So, therefore, the final answer is p=40 kg. m/s.

I hope this helped answer your question. Enjoy your day, and take care!

3 0

3 years ago