Please help I don't know how to do this

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f.s. = 2 against bucklin

A( developed during the process of technology design