Answer:
potential energy which later on gets converted to kinetic energy of an object
Answer:
68.6 m/s
Explanation:
v = Speed of sound in air = 343 m/s
u = Speed of train
= Actual frequency
From the Doppler effect we have the observed frequency as
When the train is approaching

When the train is receeding

Dividing the above equations we have

The speed of the train is 68.6 m/s
Answer:
A mineral is a solid formation that occurs in earth. A rock is a combination of more than just one mineral. And glass have more of a crystalline structure
Explanation:
Answer:
This force is called electromotive force, or EMF. Sometimes it is convenient to think of EMF as electrical pressure. In other words, it is the force that makes electrons move in a certain direction within a conductor.