We want to determine experimentally the specific heat of a 3-gram iron ingot whose mass is known. The ingot is heated to 100°C and it is placed in a 200-gram sample of water whose initial temperature is 20°C. We would expect the final temperature of the water to be around
1.100°C.
2.70°C.
3.40°C.
4.20°C.
4
You might also like to view...
A person is dragging a packing crate of mass 100 kg across a rough horizontal floor where the coefficient of kinetic friction is 0.400. He exerts a force F sufficient to accelerate the crate forward
At what angle above horizontal should his pulling force be directed in order to achieve the maximum acceleration? A) 21.8° B) 27.7° C) 30° D) 34.5° E) 45°
Ptolemy's Cosmos..
a) was geocentric with planets moving in epicycles along deferents and was the culmination of early Greek philosophy b) was the first record of an heliocentric cosmos c) was geocentric with planets exhibiting only prograde d) flat with water surrounding ut like a moat
A steel bridge is 1000 m long at -20°C in winter. What is the change in length when the temperature rises to 40°C in summer? The average coefficient of linear expansion of this steel is 11 × 10-6 K-1
A) 0.33 m B) 0.44 m C) 0.55 m D) 0.66 m
Isolated main-sequence stars as massive as 10 to 12 times the mass of the Sun may still manage to avoid going supernova. Why?
A) because they can also have strong stellar winds B) because about half that mass will be contained in the carbon core C) because they would be classified as brown dwarfs D) because these stars will eject at least 4 solar masses in the planetary nebula stage E) because their masses will decrease as they fuse heavy elements into lighter elements in their cores