What frequency is revieved by a person wastching an oncoming ambulance moving at 75 km/h and emitting a steady 440 hz sound from its siren.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

i'm on my way to history not a mistory.

prndulum needs thread, weight clock to time swings