an 18 kg child is sitting on one end of a 5.0 m playground teeter-totter which has a pivot at its midpoint as shown. how far from the pivot on the other side should her 25 kg friend sit to balance the teeter-totter?

Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?

If you visited mount shasta city (elevation 900 m [3000 ft.]) and found the outside air temperature to be 27°c (81°f), what would be the air temperature at the summit of mount shasta (elevation 4200 m [14,000 ft.]) at that moment-assuming that the temperature conditions with altitude change at an average, or normal, lapse rate?