Answer:
water contracts as it freezes at 0°C
Answer:
If the angle of incidence is bigger than the critical angle, the refracted ray will not emerge from the medium, but will be reflected back into the medium. This is called total internal reflection. The critical angle occurs when the angle of incidence where the angle of refraction
Answer:
![Q = 8,345 * v](https://tex.z-dn.net/?f=Q%20%3D%208%2C345%20%2A%20v)
Explanation:
So, we are looking for an expression of the amount of water that has been drained from the tub. The expression is in terms of v that represent the number of gallons of water drained since the plug was pulled. Since we are interested in the pounds of water that has been drained from the tub we need to take into account that for every gallon of water drained, 8.345 pounds have left the tub. Therefore, the expression for the weight of water Q that has been drained from the tub in terms of v is simply :
![Q = 8,345 * v](https://tex.z-dn.net/?f=Q%20%3D%208%2C345%20%2A%20v)
Where v is the amount of gallons that has been drained from the tub.
Have a nice day. let me know if I can help with anything else
Answer:
Friction 100 j
Explanation:
Friction causes the inequality between PE and KE
100 J
Answer:
a. ρ![_\beta=1.996J/m^3](https://tex.z-dn.net/?f=_%5Cbeta%3D1.996J%2Fm%5E3)
b. ![U_E=9.445x10^{-15} J/m^3](https://tex.z-dn.net/?f=U_E%3D9.445x10%5E%7B-15%7D%20J%2Fm%5E3)
Explanation:
a. To find the density of magnetic field given use the gauss law and the equation:
,
,
Ω,
,
, ![u_o=4*x10^{-7}H/m](https://tex.z-dn.net/?f=u_o%3D4%2Ax10%5E%7B-7%7DH%2Fm)
ρ![_\beta=\frac{\beta^2}{2*u_o}](https://tex.z-dn.net/?f=_%5Cbeta%3D%5Cfrac%7B%5Cbeta%5E2%7D%7B2%2Au_o%7D)
ρ![_\beta=\frac{1}{2*u_o}*(\frac{u_o*i^2}{2\pi *r})^2](https://tex.z-dn.net/?f=_%5Cbeta%3D%5Cfrac%7B1%7D%7B2%2Au_o%7D%2A%28%5Cfrac%7Bu_o%2Ai%5E2%7D%7B2%5Cpi%20%2Ar%7D%29%5E2)
ρ![_\beta=\frac{u_o*i^2}{8\pi*r}=\frac{4\pi *10^{-7}H/m*(14A)^2}{8\pi*(1.25x10^{-3}m)^2}](https://tex.z-dn.net/?f=_%5Cbeta%3D%5Cfrac%7Bu_o%2Ai%5E2%7D%7B8%5Cpi%2Ar%7D%3D%5Cfrac%7B4%5Cpi%20%2A10%5E%7B-7%7DH%2Fm%2A%2814A%29%5E2%7D%7B8%5Cpi%2A%281.25x10%5E%7B-3%7Dm%29%5E2%7D)
ρ![_\beta=1.996J/m^3](https://tex.z-dn.net/?f=_%5Cbeta%3D1.996J%2Fm%5E3)
b. The electric field can be find using the equation:
![U_E=\frac{1}{2}*E_o*E^2](https://tex.z-dn.net/?f=U_E%3D%5Cfrac%7B1%7D%7B2%7D%2AE_o%2AE%5E2)
![E=(\frac{i*R}{l})^2](https://tex.z-dn.net/?f=E%3D%28%5Cfrac%7Bi%2AR%7D%7Bl%7D%29%5E2)
![U_E=\frac{1}{2}*8.85x10^{-12}*(\frac{14A*3.3}{1000m})^2](https://tex.z-dn.net/?f=U_E%3D%5Cfrac%7B1%7D%7B2%7D%2A8.85x10%5E%7B-12%7D%2A%28%5Cfrac%7B14A%2A3.3%7D%7B1000m%7D%29%5E2)
![U_E=9.445x10^{-15} J/m^3](https://tex.z-dn.net/?f=U_E%3D9.445x10%5E%7B-15%7D%20J%2Fm%5E3)