Recent content by vucollegeguy

I changed 12 to 11.4. My final answer came out to be -5.6 but distance can't be negative. Is my answer correct?

Since 79%, mulitplying (2.26x10^8)(0.79)= 1.78x10^8. Correct?

correction: n=1.33 and the speed of light in water (3x10^8)/(1.33)=2.25x10^8

Homework Statement A small object is 25.0 cm from a diverging lens as shown in the figure . A converging lens with a focal length of 11.4 cm is 30.0cm to the right of the diverging lens. The two-lens system forms a real inverted image 17.0 cm to the right of the converging lens. The...

The speed of light in a certain substance is 79.0% of its value in water. What is the index of refraction of this substance? Here's what I've done so far: (3.0*10^8 m/s)(0.79) because its 79%. In water, the n=1.003. I'm not sure where to go from there. Any help would be greatly...

A heart pacemaker is designed to operate at 71 beats/min using a 8.5 microF capacitor in a simple RC circuit. What value of resistance should be used if the pacemaker is to fire (capacitor discharge) when the voltage reaches 69% of maximum? Here's what I've done (but my answer was wrong)...

I've done flowcharts for my assignments, but I have no clue how to make pseudocodes. I've tried to follow the flowcharts using them as a guide but it's not helping me because I don't understand. Also, I have no programming experience. Any help with any of the following is greatly appreciated...

An electron with speed of v0=1.94 x 107 m/s is traveling parallel to an electric field of magnitude E= 1.47 × 104 N/C. How far will the electron travel before it stops? How much time will elapse before it returns to its starting point?

Ok -got it. A big "THANKKK YOUUU!" to all for all of your help!

I'd guess and say that f(x)=cos(x). So the function would be f(x)=x2cos(x). Please correct me if I am wrong. Thank you for helping thus far.

Using the power series method to solve the differential equation y'+xy=0 when y(0)=1 Write the solution in the form of a power series and then recognize what function it represents. ************************************ My answer: \sum(-1)k*[(x2k)/(2k)*k!] Is my answer correct? Is...

This is what I'm confused about. This is a practice exam for my final. And question specifically says "Sum the following series." I did what mark44 did and factored out the 3^(3) but I didn't come up with the sum formula. When I factored it out, it looked as if it were from the Taylor Series...

I can use the alternating series test where I let bn=(3n)/(2n+5), right?

The series is: (33/5) - (34/7) + (35/9) - (36/11)+... Looking at this, I'm guessing I can use the Taylor Series for arctan(x) but I don't know how to apply it or where to begin. Any help is greatly appreciated.

Solved already. Thank you all for help.