A river boat is traveling north directly across 100 m wide river at an average velocity of 10 m/s current traveling east. How long will it take the boat to reach the other side of the river?

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?

An element becomes a positively charged ion when itloses protons. loses electrons. gains electrons. gains neutrons.

Ihave this 50 question test the layer of earth's atmosphere where atoms and molecules escape into space is referred to as the a) exosphere b) ionosphere. c) mesosphere d) thermosphere