A0.080-kg remote control 22.0 cm long rests on a table, as shown in the figure below, with a length l overhanging its edge. to operate the power button on this remote requires a force of 0.345 n. how far can the remote control extend beyond the edge of the table and still not tip over when you press the power button?
assume the mass of the remote is distributed uniformly, and that the power button is on the end of the remote overhanging the table.

Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?