a ball of mass 0.1 kg moving with 10m/s collides with another ball of mass 0.2kg moving with 10m/s, calculate the common velocity if they coalesce to form a single body

What type of electromagnetic wave is used in security pens? a. x-rays c. microwaves b. visible light d. ultraviolet radiation select the best answer from the choices provided

What sort of waves exhibit the doppler effect?

The photo shows sugar dissolved into a solution with excess sugar at the bottom of the jar this type of solution is classified as a. unsaturated b. compound c. saturated d. plasma