The controlled release of nuclear energy in a reactor is accomplished by controlling fission without a chain reaction.
Answer:
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Explanation:
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B. Wrap more coils of wire around the nail
Increasing the number of coils in an electromagnet increases the strength of the magnetic field.
Answer:
s=vt2 just simplify all into metric units first
Answer:
557.7Nm
Explanation:
We are given that
![m=300 kg](https://tex.z-dn.net/?f=m%3D300%20kg)
Radius,r=1.9 m
Angular speed,![\omega=3.6rad/s](https://tex.z-dn.net/?f=%5Comega%3D3.6rad%2Fs)
Time,t=3.5 s
Initial angular velocity,![\omega_0=0](https://tex.z-dn.net/?f=%5Comega_0%3D0)
We have to find the large torque would have to be exerted .
![\alpha=\frac{\omega-\omega_0}{t}=\frac{3.6-0}{3.5}=1.03rad/s^2](https://tex.z-dn.net/?f=%5Calpha%3D%5Cfrac%7B%5Comega-%5Comega_0%7D%7Bt%7D%3D%5Cfrac%7B3.6-0%7D%7B3.5%7D%3D1.03rad%2Fs%5E2)
![\tau=I\alpha](https://tex.z-dn.net/?f=%5Ctau%3DI%5Calpha)
![\tau=\frac{1}{2}mr^2\alpha](https://tex.z-dn.net/?f=%5Ctau%3D%5Cfrac%7B1%7D%7B2%7Dmr%5E2%5Calpha)
Where ![I=\frac{1}{2}mr^2](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B1%7D%7B2%7Dmr%5E2)
Substitute the values
![\tau=\frac{1}{2}(300)(1.9)^2(1.03)=557.7Nm](https://tex.z-dn.net/?f=%5Ctau%3D%5Cfrac%7B1%7D%7B2%7D%28300%29%281.9%29%5E2%281.03%29%3D557.7Nm)