When a simple magnifying glass is used properly, the image will be formed
a. just inside the focal length of the lens.
b. about 250 millimeters in front of the lens.
c. at the focal point of the lens.
d. about 500 millimeters behind the lens.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

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?

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings