# Recent content by AlanxD

1. ### Critical angle homework

I found snails law. NiSinangle of Incidence=Nrsinangle of refraction. What should i do now?
2. ### Thermal energy of snow

Ya tks. I found the answer of 5.4X10 to the power of 10.
3. ### Thermal energy of snow

Isn't it Tf-Ti? Which is Tf=4 degrees celcius and Ti=-4 degrees celcius but isnt boiling point included at 0 degrees celcius?
4. ### Thermal energy of snow

"The Metromelt is capable of melting 150,000 kg of snow in one hour."
5. ### Thermal energy of snow

Can anyone help me for this Thermal energy question?
6. ### Thermal energy of snow

Homework Statement Assuming that the snow is -4 degrees celcius and that the water is dumped at +4 degrees celcius, calculate the amount of heat energy required to operate a metromelt for one hour. Homework Equations Q=mct Q=mLf *little f* The Attempt at a Solution I...
7. ### Critical angle homework

Ya i knw u can find the critical angle but i got the critical angle of diamond and n for water. I want to knw how to solve the angle between diamond and water.
8. ### Critical angle homework

Well the question is 2 sentences. Critical angle of diamond is n=2.42. Water n=1.33. Find the angle of incidence. My textbook says the angle is 33 degrees but i do not knw how it arrived at that answer.
9. ### Critical angle homework

Homework Statement The critical angle diamond (n=2.42) and water (n=1.33). Find the angle. Homework Equations The Attempt at a Solution I dun get how u find the angle with 2 n's. I need a solution.
10. ### Conservation of Energy and potential energy problem

its alrite and thanks
11. ### Conservation of Energy and potential energy problem

well i did 1.5X10^7 J=1/2mv square 1.5X10^7=(1/2)(40000)v square v square=750 v=27 m/s. Well to be more precise its 2.1189600X10^7-5.886000X10^6=1.5303600X10^7 1.5303600X10^7/0.15(40000)v square v square=765.18 v=27.6 rounded to 28 m/s. So according to that method. I subtract...
12. ### Conservation of Energy and potential energy problem

I found v=27 for B but i cant find the kinetic energy for C and D. As u told me i need EGa-EGb=EKb but i dun seem to have the correct answer for C and D.
13. ### Conservation of Energy and potential energy problem

So your saying i have that m=4.0X10^4. I got the potential energy for A which is 2.1X10^7, B which is 5.9X10^6, C which is 1.8X10^7, and D which is 1.4X10^7 and B's kinetic energy is 2.1X10^7-5.9X10^6=1.5X10^7. So how do i find the kinetic energy for C, D, and E. I also need to find the speed...
14. ### Conservation of Energy and potential energy problem

Now i have potential and kinetic energy. I need to find the speed of point B to D. I need a step by step solution with the formula.
15. ### Conservation of Energy and potential energy problem

Oh alrite i found the answer of 1.5 X 10 to the power of 7. From A subtract B using the Ek=Eg formula. Now i need to find the speed for points B, C, and D.