Are all types of medle attracted to magnets

Ihave a singular monitor that is a tv for my computer. recently, i took apart my computer and put it back together. when i put in the hdmi cord and booted the computer to see if it worked, the computer turned on fine but the screen was blue with "hdmi no signal." i've tried everything that doesn't require buying spare parts, any answer is appreciated!

Acompany is inviting design for its new corporate logo from its users. this is an example of ? a. crowdfunding b. crowdvoting c. crowdsourced design d. crowdtracking

According to the video what are some tasks petroleum engineers perform check all that apply