Homework Statement
in a certain uhf radio wave, the shortest distance between postions at which the elctric an magnetic fields are zero is .34m. determine the frequency of this uhf radio wave
The Attempt at a Solution
i basically just divided (3x10^8)/.34 = (8.8x10^8) that is...
thanks i was looking at my book wrong so i ended up solving for r of the proton then took that and solved for B of the electron using the same equation and got 2.7x10^-4. did anyone else get that?
Homework Statement
a proton is projected perpendicularly into a magnetic field that has a magnitude of .5 T. the field is then adjusted so that an electron will follow a circular path of the same radius when it is projected perpendicularly into the field with the same velocity that the...
Homework Statement
Two charges q1 = 5μC and q2 = 10μC are located at x = 0 cm and 10 cm respectively. What
would the magnitude and direction of the force on a 2μC charge located at x = 5 cm be due to charges q1 and q2.
Homework Equations
The Attempt at a Solution
i don't know how...
Homework Statement
I built a configuration of charge on an equilateral triangle with side length of 10cm shown
below. I decided however that I have one to many charges and wish to remove the 5μC charge completely. How much work is done by the field when I remove the charge?
The triangle...
Homework Statement
A 6μC charge is placed at the origin and a -10μC charge is placed on the x-axis at x = 5cm.
Locate the position on the x-axis where the electric field is zero.
Homework Equations
The Attempt at a Solution
6/16 * .05 = .01875
I have no idea if this attempt...
Homework Statement
If a mass of 0.3 kg is attached to a horizontal spring system with a spring constant of 32 N/m^2 is stretched 0.2 m from its relaxed length, what is the maximum speed the mass will attain when released from this position?
The Attempt at a Solution
i thought all...
Homework Statement
A satellite is orbiting above the earth. By what factor must the orbital radius be changed in order to double the period of the orbit? (Mearth = 5.98 x 1024kg, Rearth = 6.36x106m)
The Attempt at a Solution
i got 1.59 by T1/T2=(r1/r2)^3/2 so r1/r2=(T1/T2) ^2/3 so 2^2/3...
Homework Statement
Which of the following statements is true for collisions?
a) Momentum and Kinetic energy are always conserved in collisions.
b) Momentum can only conserved in elastic collisions.
c) Kinetic energy is conserved only in inelastic collisions.
d) Only kinetic energy can be...
Homework Statement
Rank the magnitude of the torques in the picture below about the marked pivot point from least to greatest
(using <, >, =). The force magnitudes are in terms of F.
a=2F and pointed up b=F and pointed down c=F pointed up and d=2F pointed down to the left with 60 degrees...
Homework Statement
Which of the following is not a vector quantity?
a) The net force.
b) The work done by an individual force.
c) The torque done by an individual force.
d) The momentum of an object.
e) The centripetal acceleration.
The Attempt at a Solution
i believe the work is not...
Homework Statement
( True / False ) When two massive objects are moved directly away from each other the work done by the force of gravity between the objects is positive for one of the objects and negative for the other.
The Attempt at a Solution
i believe the answer to be false...