Which of the following statements about a spring balance ...
Which of the following statements about a spring balance and/or a chemical balance is not correct?
the chemical balance operates on the principle of moments
the spring balance operates on Hooke's law
either may be used to measure the weight of a substance
the reading of a spring balance changes over the surface of the earth, while that of the chemical balance remains constant
Correct answer is C
No explanation has been provided for this answer.
As the pressure of a fluid increases, its viscosity ...
Three resistors with resistance 200Ω, 500Ω and 1kΩ are connected in series. A 6v b...
The capacitance of a parallel-plate capacitor ...
Which of the following is not a component of a d.c. electric motor? ...