एक प्लैटिनम प्रतिरोध थर्मामीटर में प्लैटिनम के तार का प्रतिरोध हिमांक (0°C) और क्वथनांक (100°C) पर क्रमशः 8 Ω और 10 Ω है। एक रैखिक संबंध मानते हुए, 400°C तापमान वाले गर्म टब में डालने पर प्लैटिनम के तार का प्रतिरोध क्या होगा?

A block of metal A is connected in series with another block of metal B such that both blocks have the same area of cross-section and thickness. The thermal conductivity of metal A is K and its free end is at 80°C. The temperature of the interface is 60°C and the free end of metal B is at 20°C. Under steady state, the thermal conductivity of metal B is:

80 g of water at 30°C is poured on a large block of ice at 0°C. What is the mass of ice that melts? (Take specific heat capacity of water = 1 cal/g°C and latent heat of fusion of ice = 80 cal/g)