The particles of an ice cube at 0°C (represented by the blue circles) come in contact with the particles of Juan's hand
at 37°C (represented by the orange circles). Which diagram correctly represents the temperature of the two
substances and the direction of heat flow?
|
o°C
37°C
0 °C
37°C
37°C
0°C.
37°C
0°C
1

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?