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erastovalidia [21]
4 years ago
6

When visiting some countries, you may see a person balancing a load on the head. Explain why the center of mass of the load need

s to be directly above the person’s neck vertebrae.
Physics
1 answer:
Vinvika [58]4 years ago
3 0

Explanation:

If the center of the load is directly above the vertebrae, there is no torque in the system. This is a good thing so that the vertebrae are not put out of alignment over time. (Of course, this still doesn't prevent compression of the vertebrae over time, which is a possibility.)

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Is this right at all
Alja [10]
It is correct! good job :)
7 0
4 years ago
If one is missing the opsin which detects wavelengths of approximately 560 nm what color would they be unable to see?
Licemer1 [7]

As per the question the wavelength of color of light is given as 560 nm.

We are asked to determine the color corresponding to this wavelength.

The visible spectrum corresponds to the wavelength range of 380 nm to 750 nm.

The visible spectrum contains seven colors of light.

The green light corresponds to the wavelength range of 495 nm to 570 nm.

Hence the correct answer to this question will be green light.



4 0
4 years ago
A uniform drawbridge must be held at a 37 ? angle above the horizontal to allow ships to pass underneath. The drawbridge weighs
iVinArrow [24]

Answer:

Explanation:

a ) Let T be tension in the horizontal cable .

Taking torque about hinge of weight and tension

45000 x 7 x cos37 = 3.5 sin 37 x T

T = 119431 N

b ) If R be the reaction force on the hinge

R sin 37 = 45000 ( vertical force balancing each other )

R = 74775 N

c ) The direction of R will be along the bridge

d ) Moment of inertia of bridge

I = Ml² / 3 = (45000 / 9.8 )  x 14² / 3

= 300000.

When cable breaks , the weight creates a torque about the hinge will creates angular acceleration

Torque by weight about the hinge

= 45000 x 7 x cos 37

= 251570

angular acceleration = torque / moment of inertia

= 251570 / 300000

= .84 radian / s²

4 0
3 years ago
A circuit contains a single 220 pF capacitor hooked across a battery. It is desired to store three times as much energy in a com
Anettt [7]

Answer

The capacitor should be connected in parallel as parallel connection gives the arithmetic sum of capacitance which will give a corresponding sum of energy while capacitors in series gives the sum of the reciprocal if the individual capacitance

7 0
4 years ago
When an apple falls towards the earth, the earth moves up to meet the apple . Is this true ? If yes . Why is the earth's motion
choli [55]
No , I think it’s false
7 0
3 years ago
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