Which of the following could be effectively used to reduc...
Which of the following could be effectively used to reduce friction?
kerosene
grease
water
petrol
Correct answer is B
grease is more viscous than the rest of the liquids
Which of the following assumptions is made in a simple pendulum experiment? the ...
From the diagram above, calculate the total current in the circuit ...
The fundamental frequency of vibration of a sonometer wire may be halved by ...
A radioactive element has a decay constant of 0.077s-1, calculate its half life...