you could make a self propelled car all you need is cardboard, wheels, and a balloons or rubber bands
If the length and linear density are constant, the frequency is directly proportional to the square root of the tension.
These type of commercials lead to little girls, teenagers, and women in general to feel bad about what they look like themselves and have a negative self image. extra anxiety to fit the role of the ultra thin, perfect woman<span> <span>Can lead to individuals engaging in anorexia, bulimia and over-exertion at the gym in order to attain the “perfectly-sculpted” body:
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http://objectificationofads.weebly.com/effects-on-women.html
