Answer:
<h3>
The coefficient of kinetic friction between the puck and the ice is
0.12</h3>
Explanation:
Given :
Initial speed ![v_{o} = 9.5 \frac{m}{s}](https://tex.z-dn.net/?f=v_%7Bo%7D%20%3D%209.5%20%5Cfrac%7Bm%7D%7Bs%7D)
Displacement
m
From the kinematics equation,
![v^{2} - v^{2} _{o} = 2ax](https://tex.z-dn.net/?f=v%5E%7B2%7D%20-%20v%5E%7B2%7D%20_%7Bo%7D%20%20%3D%202ax)
Where
final velocity, in our example it is zero (
),
acceleration.
![a =- \frac{90.25}{ 2 \times 37.4}](https://tex.z-dn.net/?f=a%20%3D-%20%5Cfrac%7B90.25%7D%7B%202%20%5Ctimes%2037.4%7D)
![a =- 1.21 \frac{m}{s^{2} }](https://tex.z-dn.net/?f=a%20%3D-%201.21%20%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%20%7D)
From the formula of friction,
![F =- \mu _{k } N](https://tex.z-dn.net/?f=F%20%3D-%20%5Cmu%20_%7Bk%20%7D%20N)
Minus sign represent friction is oppose the motion
Where
( normal reaction force )
( ∵
)
So coefficient of friction,
![\mu_{k} = \frac{1.21}{9.8}](https://tex.z-dn.net/?f=%5Cmu_%7Bk%7D%20%3D%20%5Cfrac%7B1.21%7D%7B9.8%7D)
![\mu_{k} = 0.12](https://tex.z-dn.net/?f=%5Cmu_%7Bk%7D%20%3D%200.12)
Therefore, the coefficient of kinetic friction between the puck and the ice is
0.12 .
Answer:
Solved
Explanation:
Free body diagram has been attached
and FBD we can say that
tension in c and b will be higher as T_1 helps to keep both the person steady.
So, ![T_1= m_b g sin\theta +m_a g sin\theta](https://tex.z-dn.net/?f=T_1%3D%20m_b%20g%20sin%5Ctheta%20%2Bm_a%20g%20sin%5Ctheta)
m_a=m_b=m_c= 65 kg and θ=25°
The term g×sinθ is the component of acceleration along the inclined surface
Similarly ![T_2= m_a g sin\theta](https://tex.z-dn.net/?f=T_2%3D%20m_a%20g%20sin%5Ctheta)
putting the value of θ and mass we get
T_2= 269.207 N
T_1= 538.41 N
Nuclear fusion is the process by which multiple nuclei join together to form a heavier nucleus.
Nuclear fusion of light elements releases the energy that causes stars to shine and hydrogen bombs to explode.
Nuclear fusion of heavy elements (absorbing energy) occurs in the extremely high-energy conditions of supernova explosions.
Nuclear fusion in stars and supernovae is the primary process by which new natural elements are created.
It is this reaction that is harnessed in fusion power.
It takes considerable energy to force nuclei to fuse, even those of the lightest element, hydrogen.
Respiratory system, it’s including your lungs, trachea & mouth+nose area
Answer:
x-rays
Explanation:
https://quizlet.com/417910083/radiology-flash-cards/