Recent content by sevens

constants in wrong spot Yes its true that final voltage across the capacitor will be zero given enough time. The question wants an equation that can be defined in terms of t. So if you take the found equation for example t =2 sec the capacitor will be zero. however if i take t=.0001s there will...

The units of W are Jouls, its energy stored in the capacitor, and i use that formula to find the initial voltage in the capacitor. The answer i got is V(t) and then under that i wrote what the answer should be "actual answer" i keep getting A1 and A2 in the wrong place for several of my circuit...

For some reason i can't get my A1 and A2 in the correct spots. I get the correct value of these two, but if someone could point out where I've gone wrong, i would apreciate it. V(0) = 125v i(0) = 0A value of the inductor is 1.25h value of the resistor is 2 Ohms value of the capacitor...

Velocity as a vector or as its components? well from what you state in the problem you know that X inital is 0 X final is 5.8 m and V final is 0. a is the acceleration of gravity if you just want to find the take off velocity you would use (Vfinal)^2 = (Vinitial)^2 + 2a(Xfinal -...

The figure shows two 1.0 kg blocks connected by a rope. A second rope hangs beneath the lower block. Both ropes have a mass of 250 g. The entire assembly is accelerated upward at 3.0 m/s^2 i found the force that pulls the system to be 32.0N However the followup question states: What is the...

A roller coaster car crosses the top of a circular loop-the-loop at twice the critical speed. What is the ratio of the car's apparent weight to its true weight? from my notes i have that Velocity_critical= squareroot ( r w / m) v = sqrt(rw/m) so what i did was multiply v times...

Thanks for the help what i did was take my answer of 33.33 rev/sec and did (1/33.33rev/sec) to find the amount of time per rotation or period T. giving me .03 sec. now that i knew the right T i could solve my equation v= (2(pi)r)/T = (2(pi)(.04m))/.03 sec = 8.38 m/s thanks for...

A computer disk is 8.0cm in diameter. a refrence dot on the edge of the disk is initially located at theta= 45 degrees. The disk accelerates steadily for 1/2 second, reaching 2000 rpm, then coasts at steady angular velocity for 1/2 second. what is the speed of the refrence dot at 1...