Desde que dejamos caer una piedra en un pozo hasta que nos llega el sonido del choque con el agua, transcurren 2 s. Si la velocidad del sonido en el aire es de 340 m/s, determina la profundidad a la que se encuentra la superficie del agua.

Sol: 17m

What causes the formation of ocean currents?

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .