1. Which of the following decreases with an increase in altitude? a. air pressure
b. visibility
c. water vapor
d. none of the above

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Need only answer if you think you know it

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.