Recent content by SereneKi

So Erms/Irms = sqrt( R^2 + (1/2(pi)fC)^2)

So Irms = sqrt( R^2 + (1/2(pi)fC)^2)

http://www.flickr.com/photos/67342906@N07/8490253833/in/photostream this should work

Homework Statement Consider a series RC circuit with R = 151 Ω and an unknown capacitor C as shown below. http://www.flickr.com/photos/67342906@N0… The circuit is driven by an alternating electromotive force with εRMS = 174 V at a frequency of f = 7.70 Hz. The current in the...

They are rad/s! So 130.99 / 2pi = 20.85 which is right! thank you so much!

so w= 11/ 200 * 1.7*10^-2 * .13 * .19 w=130.99 What now, Lon capa says that isn't the answer

d(cos(wt))/dt θ=2(pi)ft = wt emf=NBAw is that right?

Eind=-NBA*dcos(theta)/dt is that what you meant?

Homework Statement An electric generator consists of a rectangular coil of wire rotating about its longitudinal axis which is perpendicular to a magnetic field of B = 1.70 × 10-2 T. The coil measures 13.00 cm by 19.00 cm and 200.00 turns of wire. The ends of the wire are connected to an...

Homework Statement Pulley with Friction A spool of thin wire pivots on a shaft, and there is friction. The wire is pulled by a hanging mass M of 1.30 kg. After falling a distance D= 1.7 m starting from rest, the mass has a speed of 0.065 m/s. Calculate the energy lost to friction during that...

Homework Statement a small rubber wheel is used to drive a large pottery wheel, and they are mounted so that they touch. if the small wheel has a radius of 2.01 cm and accelerates at a rate of 7.08 rad/s^2 and is in contact with the pottery wheel (24.2 cm) without slipping, find the angular...

Homework Statement Approximately 1.7*10^6 kg of water drops 60 m over Niagara Falls every second. 1*10^9 J of potential energy is lost every second by the falling water. If an electrical generating plant could convert all of the potential energy into electrical energy it would have a power...