Thanks for your reply!
This is where I got confused.
So the current is toward east, and the direction of B is towards the northeast, and the angle is 24. So B and I form a angle of 66. - That's how I interpret the angle of dip. Is this wrong?
Homework Statement
The power cable for an electric trolley (see figure) carries a horizontal current of 330 A toward the east. The Earth's magnetic field has a strength 5.0 ✕ 10-5 T and makes an angle of dip of24° at this location. Calculate the magnitude and direction of the magnetic force on...
So Cv should be 5/2 R instead of 3/2 R!
but I plug in Cv = 5/2 R I get 45.8 K as the answer, still not correct.. I don't know what is going wrong here with three degrees difference.
Yes I am kind of confused about which volume heat capacity I should use, since there are both monatomic and diatomic gas in air.
For diatomic gas, the heat capacity is 5/2 R, but I don't know if I should use that.
Homework Statement
An audience of 2750 fills a concert hall of volume 35000 m3. If there were no ventilation, by how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people (70 W/person)?
Homework Equations
Q= nCvΔT
Cv= (3/2) R
The Attempt at a...