two sound waves have frequencies of 12Hz and 10Hz. Calculate their beats period

The property of a fluid that is used to determine its suitability as a lubricant is its

The density P of a spherical ball of diameter d and mass m is given by

A metal rod of density 7000 kgm-3 and cross-sectional area of 0.001257m2 has a mass of 1.76kg. Calculate its length.

In the absence of gravitational force, the weight of the body is

Which of the following statements is not correct?

Which of the following propeties is not considered in choosing mercury as a thermomemetric liquid?

The pressure in a liquid

The area under a velocity-time graph represents