Find the velocity of the student using ke= 1/2 mv^2. a 50-kilogram student is running and has 225 joules of kinetic energy. the student’s speed is meters/second

Difference between series and parallel circuits

What type of force holds atoms together in a crystal?

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?