I'd like to ask a related question. I understand that the transmitter outputs a voltage as a function of time (which creates an electric field) thus causing a flow of charge or current (creating the magnetic field) and these two fields travel down the antenna, but why don't they stop once they...
Hi again all. Thank you for all the help! I'll have to have a talking with my TA. I thought I was going crazy for a little bit there :-p
Now forgive me but as you've probably notice I'm not really good at this stuff but this is how I proceeded. I made n = mg - Tsin20. My equation for the...
Yes that is what I got. In the vertical direction I came up with n + Tsin20 - mg = 0 so n + Tsin20 = mg or n = mg - Tsin20. But then I can't find the normal force because I don't know T.
But the solution just shows Tcos20 = umg (again u = coeff of kinetic friction)
Which I can't seem to be...
So if the force isn't constant I have to find the work done by each force then add or subtract them to get the net work? Otherwise if the force is constant I can use the method I tried using in which I just find the net force and then multiply by the distance to find the work right?
Hi again, all. I thought of another question that I need help with. Again I have the answer but I'm not sure how they got to it. The question is:
A 1.6kg block is supported on a horizontal surface. The block is attached to a sping with k = 1000 N/m. The block compresses the spring x = 0.02 m...
Hi all, I was hoping for a little help with this problem. I already have the solution but I don't understand how they got the answer. The question is:
A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope. The rope is inclined at 20.0° above the...