Recent content by moonlit

Nevermind, I figured it out. Thanks anyway!

I got the last one but the other two I'm still unsure of...

I'm really not sure how to figure these 3 problems out. Can someone please help me. Thanks. 1) A converging lens has a focal length of 85 cm. A 14-cm-tall object is located 121 cm in front of this lens. (a) What is the image distance? (b) What is the image height? Be sure to include the...

Ok, here's what I did for problem 3. I thought this answer was correct but it isn't. What did I do wrong? sin 30 deg(1.65)=sin theta g (1.52) sin -1[sin 30 deg(1.65)/(1.52) = theta g = 32.87 deg

Hmmm here's what I've done: 3.00x10^8/2.45x10^7=12.244 but the program is saying the answer is incorrect. What did I do wrong?

For the first problem, how do I find n=C/V? I know v=2.45x10^17 but how do I figure out C?

I'm reviewing for a final in my physics class and was wondering if someone could help me with the problems I got wrong (maybe show the equation and solution or something). Thanks! 1) Light has a wavelength of 521.5 nm and a frequency of 4.690 x 1014 Hz when traveling through a certain...

Haha, nevermind. Figured it myself, thanks anyway.

I have a homework problem that I'm not sure how to figure out. What equation should I use for this? A person whose eyes are 1.8 m above the floor stands in front of a plane mirror. The top of her head is 0.12 m above her eyes. What is the height of the shortest mirror in which she can see...

Ok, I got the answer correct. Thanks for your help!

I have a problem that I'm working on, not sure what equation to use for this: The current in a 54 ohm resistor is 0.13 A. This resistor is in series with a 23 ohm resistor, and the series combination is connected across a battery. What is the battery voltage?

Ok, not sure what to do with part b. P=E/T so wouldn't that be .01? Also, how do I convert amps to volts?

So the answer to part A would be .01 C correct? What about part B?

I have two physics problems that I'm not sure how to do, can someone help me? 1) A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. A defibrillator passes 16 A of current through the torso of a person in 1.6 ms. (a) How much charge moves during...

I guess I completely overlooked that. I think I've spent too much time on this prob. Thanks for your help though! Also, quick question regarding the second problem. I know I should use the equation a=F/mp. How do I solve for F since it's in Joules?