Recent content by jacksonwiley

i'm not sure if that is right but it is an answer choice. what method did you use?

Homework Statement A double concave lens has equal radii of curvature of 15.1 cm. An object placed 14.2 cm from the lens forms a virtual image 5.0 cm from the lens. What is the index of refraction of the lens material? A. 1.98 B. 1.9 C. 1.84 D. 2.06 Homework Equations 1/f = (n – 1 ) (1/R1...

yeah that's what i thought, but i submitted both of those and neither is correct but i think that may be a mistake! thanks!

Homework Statement An RLC circuit has a resistance of 2.0 kΩ, a capacitance of 8.0 µF, and an inductance of 9.0 H. If the frequency of the alternating current is 4.0/π kHz, what is the phase shift between the current and the voltage? A) -1.6 rad B) -1.5 rad C) 36 rad D)...

aw man okay, i did that and got 26 but its not right. i don't know what I'm missing.

if i set them equal to each other and then solved for frequency that would lead to the right answer, right?

yeah i think that's just a mistake in the problem that I was given, because i double checked and it has voltage in ohms which is weird. but the peak voltage/impedance works i think. thanks for the help!

Yeah I think it's assumed that this is a series RLC circuit

Would i just find the difference of the two?

Homework Statement For an RLC circuit with a resistance of 13.0 kΩ a capacitance of 7.0 µF, and an inductance of 35.0 H. What frequency is needed to minimize the impedance? A) 0.064 kHz B) 0.010 kHz C) 12 kHz D) 2.1 kHz Homework Equations Xc = 2∏ƒL XL = 1/ (2∏ƒC) The...

it doesn't say if its in series or parallel. so i was just using the generalized RLC circuit equations. (748,000)/ √(25000)^2 + [{2∏*(632,000)} - (1/(2∏*632,000* 16x10^-6))^2] that's the work, its a lot to take in. that gives the Irms . i tried taking the voltage and using ohm's...

would i just go about it by perhaps multiplying the 85 mH of the sole by the rate of decrease which is 2.5 A/s?

Homework Statement An 85 mH solenoid inductor is wound on a form 0.80 m in length and 0.10 m in diameter. A coil is tightly wound around the solenoid at its center. The coil resistance is 8.1 ohms. The mutual inductance of the coil and solenoid is 27 µH. At a given instant, the current in the...

Homework Statement An RLC circuit has a sinusoidal voltage supplied to it at 632 kHz with a peak voltage of 748 kΩ; a 25 kΩ resistance; a 16 µF capacitance; and a 30 H inductance. What is the peak current for this circuit? A) 30 μA B) 26 μA C) 6.3 μA D) 11 μA...

oh i confused the different right hand rules. so they're both into the page. but then which rule do i use to determine the current ?