Recent content by monke

one more question when working problems like this and others with realtive velocity c will always be the speed of light value ? if so then how can something such as V=0.50c be able to be sub in for v^2/c^2

thank you :)

Homework Statement An unstable particle called the pion has a mean lifetime of 25ns in its own rest frame. A beam of of pions travels through the lab with a speed of 0.60c. a) what is the mean lifetime of the pions as measured in the lab frame? b) how far does a pion travel ( as measured...

for the second part of the question, if a refracting telescope functions like a compound microscope does that mean that you would use the same angular equation? M= -L/foX N/Fe

how should i have applied that to this particular question?

angle in terms of radians is theta= s/r (size of arc)/ radius

i think i found it theata = 2(radius)/disatance from the sun?

would that be theata= h (size of object)/N ( near point =25cm)?

Homework Statement a) what is the angular size of the moon as viewed from the Earth's surface? b) The objective and eyepiece of a refracting telescope have focal lenghts 80cm and 2.0cm. What is the angular size of the moon as viewed though this telescope? mean radius of the moon-...

actually i may have gotten it. if i find f using f=(1/2)R the pulg into the mirror equation 1/p+ 1/q = 1/f and solve i have the answer?

Homework Statement An object 2.00cm high is placed 12.0cm in front of a convex mirror with radius of curvature of 8.00cm. Homework Equations Where is the image formed? Draw a ray diagram The Attempt at a Solution do i use the equation m=-q/p? if so then (object distance)p= 12cm...

oh i think i got it you use n=1.00 sin60= 1.20sin theta 1 and then solve for theta 1 and sub in all down the layers until you use n=1.00 and solve for theta i. the angle is the same going out of the layers as it was going in?

then do i just add all the thetas together?

okay what do i use for the n1 sinθ1? is that 60* and the n for air =1.000?

Homework Statement A beam of light in air is incident on a stack of 4 flat transparent materials with indicies of refraction 1.20, 1.40, 1.32, and 1.28. If the angle of incidence for the beam on the first of the four materials is 60*, what angle does the beam make witht the normal when it...