Thank for the advice.
From the RHR, the magnetic field is pointing in the x-axis direction, similar to B_o.
The value for B_o is given as 1.50 x 10^-6 T, so the total B field will then be 1.50 x 10^-6 + 1.6 x 10^-6 T = 1.0 x 10^-7 T.
I am still confuse on how to find the angle, can...
Homework Statement
A long, straight wire lies along the y-axis and carries a current I = 8.00 A in the -y-direction . In addition to the magnetic field due to the current in the wire, a uniform magnetic field with magnitude is in the +x-direction.
What is the magnitude of the total...
I think I've got it.
P = 2pi(sqrt(a^2/2gd + d/g))
If you look at this, how can you determine whether it has a local maximum or local minimum for some value of d?
Thank for the useful info.
Is this the correct moment of inertia of the disk about the pivot point.
I= 1/2Ma^2 + Md^2 = M ( 1/2a^2 + d^2)
So the period of the disk is
P = 2pi (sqrt (M(1/2a^2 + d^2))
So is this right :
I = 1/2Ma^2
P = P= 2pi (sqrt 1/2Ma^2/(1/2Mgd^2)) == then we can cancel out the M to get
P = 2pi (sqrt 1/2a^2/(1/2gD^2)) === cancel 1/2 ===
P = sqrt(a^2/gd^2)
Homework Statement
http://img120.imageshack.us/img120/808/periodicemotionhd3.jpg solid, uniform disk of mass M and radius a may be rotated about any axis parallel to the disk axis, at variable distances from the center of the disk
If you use this disk as a pendulum bob, what is T(d), the...
Homework Statement
Now assume that the x coordinate of point R is 0.12m and the t coordinate of point K is 0.0050 s.
What is the period T ?
Homework Equations
T = 1/f where f is the frequency and T is the period.
The Attempt at a Solution
From the graph, there are 2...
Thank you KoGs for replying to my question. I have finally figure our how to solve the problem. First I have to balance the centripetal force and the centrifugal forces.
After finding the initial kinetic energy and the energy due to falling I was able to find the speed at which it hits the...
An unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 43.0 km (see Appendix F). To the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 20.0 m/s.
If...
I think we have to use the radius of the Earth to calculate for the satellite's altitude
So the above equation F = mgU = mgh U=Fh h= U/F is not correct
Yes, I have tried F=mg U=mgh U=Fh h=U/F and substituting in 1.49×10^11 J/ 15.1 kN. But I've got the wrong answer.
Can someone comment more on this
Thank
When in orbit, a communication satellite attracts the Earth with a force of 15.1 kN and the earth-satellite gravitational potential energy (relative to zero at infinite separation) is - 1.49×10^11 J. Take the radius of the Earth to be r_e = 6.38×106 m.
Find the satellite's altitude above the...
Consider a spherical planet of uniform density p. The distance from the planet's center to its surface (i.e., the planet's radius) is R_p. An object is located a distance R from the center of the planet, where R < R_p. (The object is located inside of the planet.)
Find an expression for the...