Recent content by AlanxD

I found snails law. NiSinangle of Incidence=Nrsinangle of refraction. What should i do now?

Ya tks. I found the answer of 5.4X10 to the power of 10.

Isn't it Tf-Ti? Which is Tf=4 degrees celcius and Ti=-4 degrees celcius but isn't boiling point included at 0 degrees celcius?

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

Can anyone help me for this Thermal energy question?

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.

its alrite and thanks

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 can't 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...

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.

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.