A child does 0. 20 joule of work to compress the spring in a pop-up toy. If the mass of the toy is 0. 010 kilogram, what is the maximum vertical height that the toy can reach after the spring is released?.

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It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

Your answer is: increased air temperatures  hope this ! : )

I’m confused on what uu trying ask