Two people climbed to the roof of a building. The old person walked up a gentle ramp. The young person climbed up a steep spiral staircase. If they weigh the same, which person did more work? Explain.

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?