You own a high speed digital camera that can take a picture every 0.5 seconds. you decide to take a picture every 0.5 seconds of your physics teacher as she drops a watermelon off the top of the school. after you develop and analyze the pictures, you realize that the distance the watermelon falls from the teacher in each new picture is

What are atoms of the same element with varying number of neutrons

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?