Thursday
April 17, 2014

Homework Help: physics

Posted by Sandhya on Wednesday, September 24, 2008 at 4:21am.

1.In a cathode ray tube, electrons are accelerated from rest by a
constant electric force of magnitude 6.56 x 10*-17 N during the
first 1.87 cm of tube's length; then they move at essentially
constant velocity another 45.0 cm before hitting the screen.
Find the speed of the electrons when they hit the screen.

How long does it take them to travel the length of the tube?

2.It takes 2.60 s for a small ball with a mass of 0.060 kg released
from rest from a tall building to reach the ground. Calculate
the height from which the ball is released.

If that ball had been released from the same height, but this
time above the surface of the moon, how long would it have
taken for the ball to hit the ground?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physics14 - In a cathode ray tube, electrons are accelerated from rest by a ...
physics6 - In a cathode ray tube, electrons are accelerated from rest by a ...
Physics - In a cathode ray tube, electrons initially at rest are accelerated by ...
Physics - In a cathode ray tube, electrons initially at rest are accelerated by ...
Physics - In a cathode ray tube, electrons initially at rest are accelerated by ...
Physics - In a television tube, electrons initially at rest are accelerated by a...
Physics - The anode (positive terminal) of an X-ray tube is at a potential of +...
Physics - The anode (positive terminal) of an X-ray tube is at a potential of +...
chemistry - how would the electrons produced in a cathode ray tube filled with ...
college physics - The electrons that produce the picture in a TV set are ...

Search
Members