1) A person walks 15 feet to the left, and then 15 feet to the right. What is the person's DISTANCE and DISPLACEMENT?

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?

Which statement best describes what energy transfer diagrams show? energy can change form, but the total amount of energy stays the same. every energy transformation results in a reduction of energy energy transformations result in fewer types of energy each type of energy can change into one other type of energy