Satellite 1, which has mass M1, orbits earth at a semi major axis r1. Satellite 2 has a mass of 6m1 and orbits at 2r1. What is the ratio of the gravitational force by earth on satellite 2 to the gravitational force by earth in satellite 1?

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Arrange the images in order to show how lake-effect snow occurs.

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25º, b) el tiempo que el balón permanece en el aire.