Answer:
Explanation:
let force exerted by engine be F.Net force =( F-400)N, applying newton law
F-400 = 1.5 x 10³x18 =27000 ,
F = 27400 N.
velocity after 12 s = 0 + 18 x 12 = 216 m/s
Average velocity = (0 + 216 )/2 = 108 m/s
Average power = force x average velocity = 27400 x 108 = 29.6 10⁵ W .⁶
b) At 12 s , velocity = 216 m/s
Instantaneous power = velocity x force = 216 x 27400 = 59.2 x 10⁶ W.
Answer:
0.0902282795798 m
Explanation:
m = Mass of Neptunium = 60 kg
= Density of Neptunium = ![19.5\ g/cm^3](https://tex.z-dn.net/?f=19.5%5C%20g%2Fcm%5E3)
r = Radius
Volume is given by
![V=\dfrac{m}{\rho}\\\Rightarrow \dfrac{4}{3}\pi r^3=\dfrac{60}{19500}\\\Rightarrow r=(\dfrac{3\times 60}{4\times \pi\times 19500})^{\dfrac{1}{3}}\\\Rightarrow r=0.0902282795798\ m](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7Bm%7D%7B%5Crho%7D%5C%5C%5CRightarrow%20%5Cdfrac%7B4%7D%7B3%7D%5Cpi%20r%5E3%3D%5Cdfrac%7B60%7D%7B19500%7D%5C%5C%5CRightarrow%20r%3D%28%5Cdfrac%7B3%5Ctimes%2060%7D%7B4%5Ctimes%20%5Cpi%5Ctimes%2019500%7D%29%5E%7B%5Cdfrac%7B1%7D%7B3%7D%7D%5C%5C%5CRightarrow%20r%3D0.0902282795798%5C%20m)
The radius of the sphere would be 0.0902282795798 m
<span>You are given a rectangular coil with sides 0.190 m by 0.220 m and has 501 turns of wire, a uniform magnetic field of 0.550 T that is perpendicular to the long axis and a voltage of 115V. The frequency is 780 per second.</span>