In an electricity experiment, a 1.0 g plastic ball is suspended on a 60-cm-long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force F → elec on it, causing the ball to swing out a 20° angle and remain there. a. What is the magnitude of F → elec ? b. What is the tension in the string?
In an electricity experiment, a 1.0 g plastic ball is suspended on a 60-cm-long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force F → elec on it, causing the ball to swing out a 20° angle and remain there. a. What is the magnitude of F → elec ? b. What is the tension in the string?
In an electricity experiment, a 1.0 g plastic ball is suspended on a 60-cm-long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force
F
→
elec
on it, causing the ball to swing out a 20° angle and remain there.
1.) A proton is moving to the right (along the positive x-axis) under the influence of an electrical
field. It starts off with an initial velocity of 8x104" and comes to a stop over a distance of 1
kilometer. It travels in a straight line.
a) What is the force that the proton experiences (magnitude and direction)?
b) What is the magnitude and direction of the electrical field?
U Resources
A uranium ion and an iron ion are separated by a distance of R = 41.70 nm. The uranium atom is singly ionized; the iron
atom is doubly ionized. Calculate the distance r from the uranium atom at which an electron will be in equilibrium. Ignore
the gravitational attraction between the particles.
uranium ion
iron ion
nm
electron
++
R.
What is the magnitude of the force on the electron from the uranium ion?
magnitude of the force:
A uranium ion and an iron ion are separated by a distance of
R = 57.10 nm, as shown in the figure. The uranium atom is
uranium ion
iron ion
electron
singly ionized; the iron atom is doubly ionized.
K r
K-
R
Calculate the distance r from the uranium atom at which an
electron will be in equilibrium. Ignore the gravitational
r =
nm
attraction between the particles.
What is the magnitude Fy of the force on the electron from
the uranium ion?
N
Question Source: Freedman College Physics 3e | Publisher: Macmillan
Chapter 6 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
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