Markell, John Russell, and Daviyon were racing cars on a frictionless surface at different speed. Markell 5 m/s
John Russell 7 m/s
Daviyon 10 m/s

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth's center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

At what time will the interfering waves have an amplitudeof zero?

Aforce is a vector quantity because it has both?