How is momentum conserved when the big rolling ball hits the smaller rolling ball

Tungsten-filament lightbulb emits light based on the temperature of the filament. which phenomenon does this demonstrate?

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant