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...
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.
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.
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.
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...
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.
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...
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.