Q6. The diagram shows the cross-section of a straight wire that carries a steady current out of the plane of the paper towards the observer. The arrows represent the directions of four mag- netic fields, A, B, C and D. X А B В D С Which field causes the wire to move towards the poin
t X?
Answers
Answer:
The \: radius \: of \: upper \: cone (R _{1}) = \frac{4}{2 } = 2Theradiusofuppercone(R
1
)=
2
4
=2
Bottom radius 4cm
Volume \: of \: upper \: cone (V _{1}) = \frac{1}{3)} \pi r^{2} hVolumeofuppercone(V
1
)=
3)
1
πr
2
h
= \frac{1}{3} \pi \times ({2}^{2}) \times ( \frac{h}{2} )=
3
1
π×(2
2
)×(
2
h
)
Vol \: of \: bottom \: frustum (V_{2}) = \frac{\pi h}{3} (R \frac{2}{1} R \frac{2}{2} + R _{1}R _{2})Volofbottomfrustum(V
2
)=
3
πh
(R
1
2
R
2
2
+R
1
R
2
)
= \frac{\pi( \frac{h}{2}) }{3} (28)=
3
π(
2
h
)
(28)
Vol \: of \: bottom \: frustum (V _{2}) = \frac{\pi h}{6} (28)Volofbottomfrustum(V
2
)=
6
πh
(28)
\frac{V _{1} }{ V_{2} } = \frac{2\pi h}{3} \times \frac{6}{\pi h \times 28}
V
2
V
1
=
3
2πh
×
πh×28
6
\frac{V _{1}}{V _{2}} = \frac{2\pi h}{3} \times \frac{6}{\pi h \times 28}
V
2
V
1
=
3
2πh
×
πh×28
6
\frac{V_{1} }{ V_{2} } = \frac{1}{7}
V
2
V
1
=
7
1
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Answer:
Natural resources are resources that exist without any actions of humankind. This includes the sources of valued characteristics such as commercial and industrial use, aesthetic value, scientific interest and cultural value.