An electron in an electron gun is accelerated from rest by a potential of 25 kV applied over a distance of 1 cm.
The final velocity of the electrons is .
The mass of the electron is 9.1x10^(-31) kg and its charge is 1.6x10^(-19) C.

What is the role of the ocular lens?

Why is metal often used for cooking pan?

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.