Ahiker travels south along a straight line path for 1.5 hours with an average velocity of 0.75 km/hr, then travels south for 2.5 hours with an average velocity of 0.90 km/hr. what is the hiker's displacement for the total trip?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object

Explain how a step-down transformer makes electricity safe for use in homes