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ser-zykov [4K]
3 years ago
14

Which is an essential component of safe passive stretching?

Physics
2 answers:
Arte-miy333 [17]3 years ago
4 0

Answer: B) Good communication with partner

Explanation:

Passive stretching are the technique in which the person holding the position. Basically, in this technique there are no contribution in the motion range and person are in state of rest position or relaxed. And the external force are established by the outsider manually. So, at that point you need good communication and proper understanding with the partner.  

Viefleur [7K]3 years ago
3 0

The correct answer is B. Good communication with partner

Explanation:

Stretching involves flexing one of more muscles in the body, this is recommended as part of the exercise to make muscles flexible and strong. In the case of passive stretching, there is an external force such as a machine or person that helps you stretch while you remain in a static and relaxed position. In the case of working with a partner, it is important to have good communication, in this way you can let him/her know the range of appropriate stretch for your body to avoid possible muscular injuries due to overstretching. Thus, an essential component of safe passive stretching is "Good communication with partner".

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If a current-carrying wire is in a magnetic field, in what direction will a force be exerted on the wire?.
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What sort evidence must be gathered to support the idea that all living things are composed of cells
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<u>Answer:</u>

To support the idea that all living things are composed of cells samples of many kinds of living things should be examined under a microscope to identify the presence of cells.

<u>Explanation:</u>

Cell theory states that all living beings are composed of cells. To prove this a thorough examination of a number of living beings under a powerful microscope is needed. Parts of all living things when observed under the microscope are found to be made up of smaller units called cells.

This examination helps to identify differences between plant cells and animal cells. It also gives an idea of the existence of unicellular organisms.  

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4 years ago
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In hydroelectric dams, gravitational potential energy is used to produce electrical energy. What is the mass of water that must
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What mass of water must fall 12m in order to lose 10,800J of gravitational potential energy ?

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10,800J = (mass) x (9.8 m/s²) x (12m)

Mass = (10,800J) / (9.8 m/s² x 12m)

Mass = (10,800 / 9.8 x 12) (Joule-sec²/m²)

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5 0
3 years ago
A viscoelastic polymer that can be assumed to obey the Boltzmann superposition principle is subjected to the following deformati
Slav-nsk [51]

The question is incomplete. The complete question is :

A viscoelastic polymer that can be assumed to obey the Boltzmann superposition principle is subjected to the following deformation cycle. At a time, t = 0, a tensile stress of 20 MPa is applied instantaneously and maintained for 100 s. The stress is then removed at a rate of 0.2 MPa s−1 until the polymer is unloaded. If the creep compliance of the material is given by:

J(t) = Jo (1 - exp (-t/to))

Where,

Jo= 3m^2/ GPA

to= 200s

Determine

a) the strain after 100's (before stress is reversed)

b) the residual strain when stress falls to zero.

Answer:

a)-60GPA

b) 0

Explanation:

Given t= 0,

σ = 20Mpa

Change in σ= 0.2Mpas^-1

For creep compliance material,

J(t) = Jo (1 - exp (-t/to))

J(t) = 3 (1 - exp (-0/100))= 3m^2/Gpa

a) t= 100s

E(t)= ΔσJ (t - Jo)

= 0.2 × 3 ( 100 - 200 )

= 0.6 (-100)

= - 60 GPA

Residual strain, σ= 0

E(t)= Jσ (Jo) ∫t (t - Jo) dt

3 × 0 × 200 ∫t (t - Jo) dt

E(t) = 0

5 0
3 years ago
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