The mass of an empty density bottle is 30g. When filled w...
The mass of an empty density bottle is 30g. When filled with a liquid, the mass of the bottle and the liquid is 40g. On heating the filled bottle through 40ºc, the mass reduces to 38g. Calculate the apparent cubic expansivity of the liquid
6.25 x 10K-1
6.25 x 10-3K-1
2.50 x 10-3K-1
2.50 x 10-4K-1
Correct answer is B
Apparent cubic expansivity = mass of hot liquid expelledmass of hot liquid left x temp. rise
= 28×40=0.00625
Which of the following is NOT correct? i. the pitch of a sound note depends on the frequency of v...
I. Force (N) II.Torque (Nm) III. Current (A) IV. Power (W) Which of the above are the correct S....
All the heat generated in a 5Ω resistor by 2A flowing for 30 seconds is used to evaporate 5...
Total internal reflection occurs when light moves from? ...
When the temperature of a liquid increases, its surface tension ...