What is the phase difference in a Young's double slit experiment where the intensity is half that of the central maximum?
A)
45
B)
180
C)
90
D)
23
E)
245
Question 2
How much heat is required to change 456 g of ice at -25.0C into water at 25.0C? The specific heat of ice is 2090 J/(kgK)and the latent heat of fusion of water is 33.5 104 J/kg.
A)
224 kJ
B)
153 kJ
C)
112 kJ
D)
71.5 kJ
E)
72.5 kJ