666J
8360J
666 000J
674 360J
Correct answer is D
Q = mL + mc\(\theta\)
= (2 x 333000) + (2 x 2090 x 2)
= 674 360J
conduction
convection
refraction
reflection
Correct answer is D
No explanation has been provided for this answer.
The vacuum in a thermos flask helps to reduce heat transfer by?
convection and radiation
convection and conduction
conduction and radiation
radiation only
Correct answer is B
No explanation has been provided for this answer.
copper, steel, glass
steel, copper, glass
steel, glass, copper
copper, glass, steel
Correct answer is A
No explanation has been provided for this answer.
1466Jkg-1 oC-1
2933Jkg-1 oC-1
4400Jkg-1 oC-1
5866Jkg-1 oC-1
Correct answer is A
22,000 = 1.5 x c x (30 - 20)
c = 1466Jkg-1 oC-1