Recent content by kdrobey

Homework Statement The average intensity of sunlight at the top of the Earth's atmosphere is 1390 W/m2. What is the maximum energy that a 10 m multiplied by 45 m solar panel could collect in one hour in this sunlight? Homework Equations ? The Attempt at a Solution I multiplied...

Homework Statement The distance between Earth and the moon can be determined from the time it takes for a laser beam to travel from Earth to a reflector on the moon and back. If the round-trip time can be measured to an accuracy of 0.17 of a nanosecond (1 ns = 10-9 s), what is the...

I'm still not getting it. I used V=IZ. I have V, which is 235 volts right? still, i did not have I or Z. So i used Z=(square root of)R^2 +(Xl-Xc)^2, and I got .89 for Z. Then plugging back into V=IZ, (235v)=I(.89)=262.49A for current?

Homework Statement A circuit consists of a 215 resistor and a 0.200 H inductor. These two elements are connected in series across a generator that has a frequency of 120 Hz and a voltage of 235 V. (a) What is the current in the circuit? (b) Determine the phase angle between the...

got it! thanks a lot

so if Xl=Xc, then 1/2(Pi)fl=2(Pi)fC? i tried that then got 1=(2pi fL)*(2pi fC). is that on the right track?

Homework Statement At what frequency (in Hz) are the reactances of a 58 mH inductor and a 84 µF capacitor equal? Homework Equations Xl=1/2(Pi)fL Xc=2(Pi)fC [b]3. The Attempt at a Solution [/b F needs to be the same for both, so i got f by itself in both equations, then had them...

Homework Statement A series RCL circuit contains a 47.0 resistor, a 2.00 µF capacitor, and a 5.00 mH inductor. When the frequency is 2520 Hz, what is the power factor of the circuit? Homework Equations cos(angle)=Vr/Vo Vr=(IrmsR) Vo=IrmsZ The Attempt at a Solution I know power...

to solve for v, i tried v=(Square root)2q/m. so 2(1.6e-19)/(9.11e-31)=592673.9=v. then F=0.29*(1.6e-19)(592673.9)=2.75e-14

Homework Statement In a television set, electrons are accelerated from rest through a potential difference of 23 kV. The electrons then pass through a 0.29 T magnetic field that deflects them to the appropriate spot on the screen. Find the magnitude of the maximum magnetic force that an...

Homework Statement Due to friction with the air, an airplane has acquired a net charge of 1.70 multiplied by 10-5 C. The plane moves with a speed of 2.80 multiplied by 102 m/s at an angle θ with respect to the Earth's magnetic field, the magnitude of which is 5.00 multiplied by 10-5 T. The...

ohh, a mental error on my part. got it, thanks!

the sides are just dotted lines, not vectors, and the electric field is heading down in the negative y direction. in other words, side b is parallel to the electric field

yes, the two perpendicular sides are parallel with the x and y axis, side a=6.2cm and is parallel with the x axis, and side b is parallel to the y axis. so part a since the angle is 90, the change in v would be zero. but for side b, -3540*.0077*cos(0)=27.258, but that was still the wrong answer

ohhh i see. so (705 x 10^-6)*(302)^2=36.096?