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erma4kov [3.2K]
3 years ago
13

How do scientist figure out how diseases start

Physics
1 answer:
mel-nik [20]3 years ago
5 0

Answer: sometimes when people start having an outbreak of it, i guess

Explanation:

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A 3.10-mm-long, 430 kgkg steel beam extends horizontally from the point where it has been bolted to the framework of a new build
Alex17521 [72]

Answer:

Explanation:

Given that,

The length of the beam L = 3.10m

The mass of the steam beam m_1 = 430kg

The mass of worker m_2 = 69.0kg

The distance from  the fixed point to centre of gravity of beam = \frac{L}{2}

and our length of beam is 3.10m

so the distance from  the fixed point to centre of gravity of beam is

\frac{3.10}{2}=1.55m

Then the net torque is

=-W_sL'-W_wL\\\\=-(W_sL'+W_wL)

W_s is the weight of steel rod

=430\times9.8=4214N

W_w is the weight of the worker

=69\times9.8\\\\=676.2N

Torque can now be calculated

-(4214\times1.55+676.2\times3.9)Nm\\\\-(6531.7+2637.18)Nm\\\\-(9168.88)Nm

≅ 9169Nm

<h3>Therefore,the magnitude of the torque is 9169Nm</h3>

4 0
3 years ago
Which of these ALL require direction?
Hunter-Best [27]

Answer:

i think it's either force or time

Explanation:

just a random guess, but i think one of those are right

5 0
3 years ago
You could make an air purifier by pumping air through a region that has an electric field. What kinds of particles would you be
Lina20 [59]

Answer:

We can remove ions and water molecules

Explanation:

We can remove ions and water molecules because both of them have an electric field . So this will help in repelling or attractive the above mentioned particles. Water is polar so it has an electric field due to net dipole moment.

6 0
3 years ago
Which of the following is the best reason for using a scanning electron microscope?
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Answer is C: Ability to see three-dimensional images of the surfaces of object

Explanation:

To enable the technician see fractures and broken particles in a better resolution as the SEM sees the peaks and valley of the structure.

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3 years ago
If launched at the right speed, what could eventually happen to objects launched from Newton's theoretical cannon on the top of
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If the speed is higher than the orbital velocity, but not high enough to leave Earth altogether (lower than the escape velocity), it will continue revolving around Earth along an elliptical orbit. (D) for example horizontal speed of 7,300 to approximately 10,000 m/s for Earth.
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3 years ago
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