Multiple Choice
A machine gear consists of 0.14 kg of iron and 0.19 kg of copper.How much total heat is generated in the part if its temperature increases by 35.0 C°? (Specific heats of iron and copper are 450 and 390 J/kg⋅°C,respectively. )
A) 4.5E+3 J
B) 4.8E+3 J
C) 5.2E+3 J
D) 2.2E+3 J
E) 2.6E+3 J
Correct Answer:

Verified
Correct Answer:
Verified
Q39: Of the following systems,which contains the most
Q40: Carbon dioxide and water molecules in the
Q41: An inventor develops a stationary cycling device
Q42: Carly places one end of a steel
Q43: A hot (85.0°C)lump of metal has a
Q45: A solar heating system has a 25.0%
Q46: A 0.0040-kg lead bullet is traveling at
Q47: In typical calorimetry problems,what is the usual
Q48: A 38.0-kg cheetah accelerates from rest to
Q49: How does the heat energy from the