3 years ago

What bone cells respond to stress ?

1 answer:

4 0

Bone changes its molphology and density in response to the physical circumstances such as mechanical stress. Bone tissue remodeling is regulated by the cells in bone: osteoblasts, osteoclasts and their progenitors.

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A 48-kg boy is running on a track at 6m/s . What is the boys kinetic energy?

expeople1 [14]

Given:
m = 48 kg, the mass of the boy
v = 6 m/s, the boy's running speed

By definition,
the kinetic energy (KE) of the boy is
KE = (1/2)*m*v²
= 0.5*(48 kg)*(6 m/s)²
= 864 J

Answer: 864 J

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3 years ago

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A metal wire is in thermal contact with two heat reservoirs at both of its ends. Reservoir 1 is at a temperature of 781 K, and r

andreev551 [17]

Answer:2.517 J/K

Explanation:

Given

Reservoir 1 Temperature $T_1=781 K$

Reservoir 2 Temperature $T_2=335 K$

Let Q is the amount of heat Flows i.e. $Q=1477 J$

thus change in Entropy is given by $\frac{\sum Q}{T}$

$\Delta S=\frac{\sum Q}{T}=-\frac{Q}{T_1}+\frac{Q}{T_2}$

$\Delta S=\frac{\sum Q}{T}=-\frac{1477}{781}+\frac{1477}{335}$

$\Delta S=\frac{\sum Q}{T}=-1.891+4.4089$

$\Delta S=\frac{\sum Q}{T}=2.517 J/K$

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3 years ago

How can you distinguish wave motion and particle motion?

BabaBlast [244]

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<em>The particle is defined as the small quantity of matter under the consideration. ... The wave is defined as the propagating dynamic distrubance. The energy of the wave is calculated based on the wavelength and velocity</em>

<h2>I HOPE THIS WILL HELP YOU IF NOT THEN SORRY :)</h2>

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An object is held at rest and allowed to drop How far does the object fall in 3.3 seconds?

IgorC [24]

After x seconds, an object will fall $\frac{1}{2}at^2$ where a is acceleration due to gravity and t is time

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3 years ago

]What is a GOOD AND DETAILED conclusion on a thermos. will be awarded 15 points im desperate

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In conclusion, a thermos is a useful drinking cup for storing hot liquids in certain room temperatures. Drinks like coffee, tea, and other hot liquids can still stay warm thanks to the thermos.

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