You should mention that sound waves are generated in identical conditions i.e the speed of sound is same in the two experiments.
In that case the ratio is
2v/2L1 : 3v/4L2 = 4L2 : 3L1 .
Answer:
The couch will remain stationary
Explanation:
Friction is the force that resist/opposes the motion. It is the force that has to e overcome before an object can move.
Since the frictional force of 50 N is required before the couch can move, applying 25 N can not overcome the frictional force of 50 N, so the couch will remain stationary.A force greater than 50 will be require to set the couch in motion
The most common symbol for momentum is p
The mass of Mars is smaller than that the mass of Earth, therefore the acceleration of gravity on Mars is much less than that the acceleration of gravity of the Earth.
The weight of an object is directly proportional to the magnitude of the gravitational acceleration of the planet where it is.
In this case, the gravitational acceleration in Mars is 3.711 m/s² and that of the planet Earth is 9.807 m/s².
The acceleration of gravity on Earth is 2.63 times greater than that the acceleration of gravity on Mars. This explains that the same object weighs 263% more on earth
