Answer:
![W_{fr} = 281.539\,J](https://tex.z-dn.net/?f=W_%7Bfr%7D%20%3D%20281.539%5C%2CJ)
Explanation:
The kinetic force of friction is:
![f = (0.260)\cdot (31\,kg) \cdot (9.807\,\frac{m}{s^{2}})\cdot \cos 32^{\textdegree}](https://tex.z-dn.net/?f=f%20%3D%20%280.260%29%5Ccdot%20%2831%5C%2Ckg%29%20%5Ccdot%20%289.807%5C%2C%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D%29%5Ccdot%20%5Ccos%2032%5E%7B%5Ctextdegree%7D)
![f = 67.033\,N](https://tex.z-dn.net/?f=f%20%3D%2067.033%5C%2CN)
Before calculating work, it is require to determine if force exerted on the crate is enough to move it at least. The equation of equilibrium for the crate is:
![\Sigma F = F - f + m\cdot g \cdot \sin \theta = m \cdot a](https://tex.z-dn.net/?f=%5CSigma%20F%20%3D%20F%20-%20f%20%2B%20m%5Ccdot%20g%20%5Ccdot%20%5Csin%20%5Ctheta%20%3D%20m%20%5Ccdot%20a)
The acceleration experimented by the crate is:
![a = \frac{F-f}{m} + g\cdot \sin \theta](https://tex.z-dn.net/?f=a%20%3D%20%5Cfrac%7BF-f%7D%7Bm%7D%20%2B%20g%5Ccdot%20%5Csin%20%5Ctheta)
![a = \frac{118\,N-67.033\,N}{31\,kg}+(9.807\,\frac{kg}{m^{2}} )\cdot \sin 32^{\textdegree}](https://tex.z-dn.net/?f=a%20%3D%20%5Cfrac%7B118%5C%2CN-67.033%5C%2CN%7D%7B31%5C%2Ckg%7D%2B%289.807%5C%2C%5Cfrac%7Bkg%7D%7Bm%5E%7B2%7D%7D%20%29%5Ccdot%20%5Csin%2032%5E%7B%5Ctextdegree%7D)
![a = 6.841\,\frac{m}{s^{2}}](https://tex.z-dn.net/?f=a%20%3D%206.841%5C%2C%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D)
This positive result indicates that motion is physically reasonable. Hence, the work done by the force of friction is:
![W_{fr} = (67.033\,N)\cdot (4.20\,m)](https://tex.z-dn.net/?f=W_%7Bfr%7D%20%3D%20%2867.033%5C%2CN%29%5Ccdot%20%284.20%5C%2Cm%29)
![W_{fr} = 281.539\,J](https://tex.z-dn.net/?f=W_%7Bfr%7D%20%3D%20281.539%5C%2CJ)
Pig because it is made up of many organs system like cardiovascular and muscular system
The question is maya most likely trying to answer is, how does the thickness of the wire affect the strength of an electromagnet?
<h3>
What is effect of thickness of wire on strength of electromagnet?</h3>
From the experimental set-up by maya, we can determine the effect of thickness of wire on strength of electromagnet.
R ∝ 1/A
where;
- R is resistance of the wires
- A is area of the wires (from thickness or radius of the wire)
As the thickness of the wire increases, the area of the wire increases and the resistance of the wire will decrease. As the resistance of the wire decreases, the current flowing in the wire increases as well.
Thus, the increase in the thickness of a wires increases, the strength of an electromagnet.
Learn more about strength of an electromagnet here: brainly.com/question/2331156
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Your joints connect all the bones together in your body.
Isn't it "gravity" this would makes sense because grvaity difines weight