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Ugo [173]
2 years ago
13

What best explain the cirulation system within mammals

Physics
2 answers:
AysviL [449]2 years ago
4 0
The circulation system for mammals is very complex
Brums [2.3K]2 years ago
4 0

Answer:

Mammals used a close, double-loop circulatory system aided by a four-chambered heart.

Explanation:

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At a point 1.2 m out from the hinge, 14.0 N force is exerted at an angle of 27 degrees to the moment arm in a plane which is per
geniusboy [140]

Answer:

\tau = 7.63 Nm

Explanation:

As we know that moment of force is given as

\tau = \vec r \times \vec F

now we have

\vec r = 1.2 m

\vec F = 14 N

now from above formula we have

\tau = r F sin\theta

here we know that

\theta = 27 degree

so we have

\tau = (1.2)(14) sin27

\tau = 7.63 Nm

3 0
3 years ago
Compare the time period of two simple pendulums of length 4m and 16m at a place.
Vlad1618 [11]

Answer:

the period of the 16 m pendulum is twice the period of the 4 m pendulum

Explanation:

Recall that the period (T) of a pendulum of length (L)  is defined as:

T=2\,\pi\,\sqrt{ \frac{L}{g} }

where "g" is the local acceleration of gravity.

SInce both pendulums are at the same place, "g" is the same for both, and when we compare the two periods, we get:

T_1=2\,\pi\,\sqrt{\frac{4}{g} } \\T_2=2\,\pi\,\sqrt{\frac{16}{g} } \\ \\\frac{T_2}{T_1} =\sqrt{\frac{16}{4} } =2

therefore the period of the 16 m pendulum is twice the period of the 4 m pendulum.

5 0
2 years ago
1)
Ket [755]

Answer:

1) D

2) A

Explanation:

1) Each group has the same number of valence electrons, which are the outer electrons.

2) Ionic bonds are between a metal and non - metal, the metal being sodium and the non - metal being chlorine.

3 0
3 years ago
Which of the following is a chemical change?
e-lub [12.9K]
A screw driver rusting when left in a pail of water is a chemical reaction
4 0
2 years ago
Read 2 more answers
Find the force on an object which has the mass of 20kg and an acceleration of 10m/s
Elis [28]

Answer:

200 Newtons

Explanation:

20 kg x 10 m/s squared

4 0
3 years ago
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