Answer:
The question is wrong Since if you apply Force on 0.0m²It would mean That the pressure exerted=F/A=F/0
An since we can't divide a number by 0, the question is wrong
Answer:
Magnetic field, B = 0.88 T
Explanation:
It is given that,
The dimension of rectangular surface is 2.80 cm by 3.15 cm. The area of rectangular surface is, ![A=8.82\ cm^2=0.000882\ m^2](https://tex.z-dn.net/?f=A%3D8.82%5C%20cm%5E2%3D0.000882%5C%20m%5E2)
Angle between the uniform magnetic field and the horizontal, ![\theta=31](https://tex.z-dn.net/?f=%5Ctheta%3D31)
Magnetic flux, ![\phi=4\times 10^{-4}\ Wb](https://tex.z-dn.net/?f=%5Cphi%3D4%5Ctimes%2010%5E%7B-4%7D%5C%20Wb)
Let B is the magnitude of magnetic field in which the rectangular surface is placed. It is given by :
![\phi=BA\ cos\theta](https://tex.z-dn.net/?f=%5Cphi%3DBA%5C%20cos%5Ctheta)
is the angle between magnetic field and the area
Here, ![\theta=90-31=59^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%3D90-31%3D59%5E%7B%5Ccirc%7D)
![B=\dfrac{\phi}{A\ cos\theta}](https://tex.z-dn.net/?f=B%3D%5Cdfrac%7B%5Cphi%7D%7BA%5C%20cos%5Ctheta%7D)
![B=\dfrac{4\times 10^{-4}}{0.000882\times cos(59)}](https://tex.z-dn.net/?f=B%3D%5Cdfrac%7B4%5Ctimes%2010%5E%7B-4%7D%7D%7B0.000882%5Ctimes%20cos%2859%29%7D)
B = 0.88 T
So, the magnitude of magnetic field is 0.88 T. Hence, this is the required solution.
<span>Compressional forces are the stress that would cause the effect called "Folding".</span>
Answer:
v_avg = 37 km/h
Explanation:
To find the average velocity in the complete trajectory you use the following formula:
( 1 )
v1: velocity in the first part of the trajectory = 70 km/h
v2: velocity in the second part of the trajectory = ?
You calculate v2 by using the following equation for a motion with constant velocity:
![v_2=\frac{2.0km}{30min}*\frac{60min}{1h}=4\frac{km}{h}](https://tex.z-dn.net/?f=v_2%3D%5Cfrac%7B2.0km%7D%7B30min%7D%2A%5Cfrac%7B60min%7D%7B1h%7D%3D4%5Cfrac%7Bkm%7D%7Bh%7D)
you replace the values of v1 and v2 in (1) and you obtain:
![v_{avg}=\frac{70km/h+4km/h}{2}=37\frac{km}{h}](https://tex.z-dn.net/?f=v_%7Bavg%7D%3D%5Cfrac%7B70km%2Fh%2B4km%2Fh%7D%7B2%7D%3D37%5Cfrac%7Bkm%7D%7Bh%7D)
hence, the average velocity is 37 km/h
There are no options here. Could you provide the different answers?