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I've been playing soccer for years and I have big quad muscles. I want to start taking salsa lessons but will my legs cause me a problem while dancing? I'm asking this because I observed that many of the fast salsa dancers have thin legs.... Any input is much appreciated.

A 1.6-cm-tall object is 30 cm to the left of a lens with a focal length of 15 cm. A second lens with a focal length of 42 cm is 58 cm to the right of the first lens. a) Calculate the distance between the image and the second lens. b) Calculate the image height.

A 2.9-cm-tall object is located 3.1 cm to the left of a converging lens with a focal length of 4.1 cm. A diverging lens, of focal length -6.5 cm, is 13 cm to the right of the first lens. a) Find the position of the final image. b) Find the size of the final image.

when i exercise the day after i mast***ate, i either run out of breath or my leg muscles get tired too quickly...why is this happening? what can i do to KEEP my muscle strength and my conditioning the day after ? eat a power bar or what? no joking, serious answers please. thanks

I had a bad ankle sprain last december while playing soccer and I recovered about 90% but I gained like 10 pounds. I don't feel like running on the track because I'm just not used to running "fat". I'm in the gym like 2 hours a day, how long should I bike a day (and what level) so I can lose 10...