Determine the speed of the hubble space telescope orbiting 598 km above the earth’s surface. Given the mass of earth is 5. 98 x 1024 kg and radius of earth is 6. 38 x 106 m.

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.