Answer:
<h2>Force due to biceps is given as</h2><h2>
![F = 1991.05 N](https://tex.z-dn.net/?f=F%20%3D%201991.05%20N)
</h2>
Explanation:
For balancing the force we know that
Torque due to weight hold on his hand = torque due to force applied by biceps
So here we will have
![mg \times L = F \times d](https://tex.z-dn.net/?f=mg%20%5Ctimes%20L%20%3D%20F%20%5Ctimes%20d)
so we have
![18.14 \times 9.8 \times 0.56 = F \times (0.05)](https://tex.z-dn.net/?f=18.14%20%5Ctimes%209.8%20%5Ctimes%200.56%20%3D%20F%20%5Ctimes%20%280.05%29)
![F = 1991.05 N](https://tex.z-dn.net/?f=F%20%3D%201991.05%20N)
Answer:
Elastic Potential Energy
Explanation:
Elastic Potential Energy (“Spring Energy”) is the form of energy an object has when it is stretched, compressed, twisted, bent, or otherwise has its shape changed as long as the object resists and will try to return to its original state.
Answer:
The ratio is KE : TM = 0.75
Explanation:
from the question we are told that
The displacement of a mass on a spring in simple harmonic motion is A/2 from the equilibrium position
Generally the total mechanical energy of the mass is mathematically represented as
![TM = \frac{1}{2} * k * A^2](https://tex.z-dn.net/?f=TM%20%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20%20%2A%20%20k%20%20%2A%20%20A%5E2)
Here k is the spring constant , A is the total displacement of the the mass from maximum compression to maximum extension of the spring
Generally this total mechanical energy is mathematically represented as
![TM = KE + PE](https://tex.z-dn.net/?f=TM%20%20%3D%20%20KE%20%20%2B%20PE)
=> ![KE = TM - PE](https://tex.z-dn.net/?f=KE%20%3D%20TM%20%20-%20PE)
Here the potential energy of the mass is mathematically represented as
![PE = \frac{1}{ 2} * k * [ x ]^2](https://tex.z-dn.net/?f=PE%20%20%20%3D%20%5Cfrac%7B1%7D%7B%202%7D%20%20%2A%20%20k%20%2A%20%20%5B%20x%20%5D%5E2)
Here x is the displacement of the mass from maximum compression or extension of the spring to equilibrium position and the value is
![x = \frac{A}{2}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7BA%7D%7B2%7D)
So
![PE = \frac{1}{ 2} * k * [ \frac{A}{2} ]^2](https://tex.z-dn.net/?f=PE%20%20%20%3D%20%5Cfrac%7B1%7D%7B%202%7D%20%20%2A%20%20k%20%2A%20%20%5B%20%5Cfrac%7BA%7D%7B2%7D%20%20%5D%5E2)
So
![KE = \frac{1}{2} * k * A^2 - \frac{1}{2} * k * [\frac{A}{2} ]^2](https://tex.z-dn.net/?f=KE%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20%20%2A%20%20k%20%20%2A%20%20A%5E2%20-%20%5Cfrac%7B1%7D%7B2%7D%20%20%2A%20%20k%20%20%2A%20%20%5B%5Cfrac%7BA%7D%7B2%7D%20%5D%5E2)
=> ![KE = \frac{1}{2} * k * A^2 - \frac{1}{8} * k * A ^2](https://tex.z-dn.net/?f=KE%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20%20%2A%20%20k%20%20%2A%20%20A%5E2%20-%20%5Cfrac%7B1%7D%7B8%7D%20%20%2A%20%20k%20%20%2A%20%20A%20%5E2)
=> ![KE = 0.375 * k * A^2](https://tex.z-dn.net/?f=KE%20%3D%20%200.375%20%20%2A%20%20k%20%20%2A%20%20A%5E2)
So the ratio of
is mathematically represented as
![\frac{KE}{TM} = \frac{0.375 k A^2 }{0.5 k A^2}](https://tex.z-dn.net/?f=%5Cfrac%7BKE%7D%7BTM%7D%20%3D%20%20%5Cfrac%7B0.375%20%20k%20A%5E2%20%7D%7B0.5%20k%20A%5E2%7D)
=>
A) Pitch depends on the frequency of a sound wave. The higher the pitch, the higher the frequency and the lower the pitch, the lower the frequency. Sound waves have different pitches due to varying frequency levels.
B) Sound is created as the pen vibrates. This vibrations also interacts with the air atoms and molecules, causing them to vibrate too, therefore, creating sound waves. The reason the brain grows annoyed at this continual sound is because the brain will focus on this sound only, causing the brain to go into overdrive, creating annoyance.
C) Sound waves are travelling vibrations of particles. Space does not have any atoms or particles for the sound vibrations to interact with, therefore creating zero sound waves to travel.
Hope this helps!! :))
The answer should be C. Both matter and energy because physical sciences are sciences concerned with the study of inanimate natural objects, including physics, chemistry, astronomy, and related subjects.
Matter and energy fall in with chemistry