9.0 KJ kg-1
84.0 KJ kg-1
168.0 KJ kg-1
334.0 KJ kg-1
336.0 KJ kg-1
Correct answer is D
Q = mcΔθ = (0.5 x 4200 x 10) + 0.5L
L = 334000
An a.c. generator can be converted into a d.c. generator by replacing ...
Which of the following cannot be used to measure the temperature of a substance? ...
Radio carrier waves are generated by causing electrons to oscillate rapidly in...
Which of the following is not a consequence of a force field? ...
Calculate the peak voltage of a mains supply of r.ms. value 220V. ...